Plant sciences

  • Article
    | Open Access

    Breeding crops with delayed senescence could plausibly increase grain yield. Here the authors show that variation at the rice SGR locus contributes to differences in senescence between indica and japonica subspecies and show that introgression can increase yield in an elite indica rice variety.

    • Dongjin Shin
    • , Sichul Lee
    • , Tae-Heon Kim
    • , Jong-Hee Lee
    • , Joonheum Park
    • , Jinwon Lee
    • , Ji Yoon Lee
    • , Lae-Hyeon Cho
    • , Jae Young Choi
    • , Wonhee Lee
    • , Ji-Hwan Park
    • , Dae-Woo Lee
    • , Hisashi Ito
    • , Dae Heon Kim
    • , Ayumi Tanaka
    • , Jun-Hyeon Cho
    • , You-Chun Song
    • , Daehee Hwang
    • , Michael D. Purugganan
    • , Jong-Seong Jeon
    • , Gynheung An
    •  & Hong Gil Nam
  • Article
    | Open Access

    Mediator is a multiprotein complex required to activate gene transcription by RNAPII. Here, the authors report that MED12 and MED13 are conditional positive regulators that facilitate the expression of genes depleted in active chromatin marks and the induction of gene expression in response to environmental stimuli in Arabidopsis.

    • Qikun Liu
    • , Sylvain Bischof
    • , C. Jake Harris
    • , Zhenhui Zhong
    • , Lingyu Zhan
    • , Calvin Nguyen
    • , Andrew Rashoff
    • , William D. Barshop
    • , Fei Sun
    • , Suhua Feng
    • , Magdalena Potok
    • , Javier Gallego-Bartolome
    • , Jixian Zhai
    • , James A. Wohlschlegel
    • , Michael F. Carey
    • , Jeffrey A. Long
    •  & Steven E. Jacobsen
  • Article
    | Open Access

    B chromosomes are supernumerary chromosomes exhibiting dramatic differences between different organs in same species. Here, the authors show programmed B chromosome elimination in goatgrass starts at the onset of embryo differentiation by nondisjunction of chromatids, anaphase lagging, and ends with the degradation of micronucleated DNA.

    • Alevtina Ruban
    • , Thomas Schmutzer
    • , Dan D. Wu
    • , Joerg Fuchs
    • , Anastassia Boudichevskaia
    • , Myroslava Rubtsova
    • , Klaus Pistrick
    • , Michael Melzer
    • , Axel Himmelbach
    • , Veit Schubert
    • , Uwe Scholz
    •  & Andreas Houben
  • Article
    | Open Access

    Comprehensive epigenomic maps of various rice varieties are still unavailable. Here, the authors report the development of eChIP as a fast and low-input upgrade of regular plant ChIP-seq protocol for epigenome analysis of 20 rice varieties and annotate over 80% of the genome with different epigenome properties for transcriptional regulation.

    • Lun Zhao
    • , Liang Xie
    • , Qing Zhang
    • , Weizhi Ouyang
    • , Li Deng
    • , Pengpeng Guan
    • , Meng Ma
    • , Yue Li
    • , Ying Zhang
    • , Qin Xiao
    • , Jingwen Zhang
    • , Hongmeijuan Li
    • , Shunyao Wang
    • , Jiangwei Man
    • , Zhilin Cao
    • , Qinghua Zhang
    • , Qifa Zhang
    • , Guoliang Li
    •  & Xingwang Li
  • Article
    | Open Access

    Increasing grain yield needs to be put in the context of environmental stress. Here, the authors reveal that a UDP-glucosyltransferase is associated with regulation of rice grain size, abiotic stress tolerance, flavonoid-mediated auxin signaling, and redirection of carbon flux to flavonoid glycosides synthesis.

    • Nai-Qian Dong
    • , Yuwei Sun
    • , Tao Guo
    • , Chuan-Lin Shi
    • , Yi-Min Zhang
    • , Yi Kan
    • , You-Huang Xiang
    • , Hai Zhang
    • , Yi-Bing Yang
    • , Ya-Chao Li
    • , Huai-Yu Zhao
    • , Hong-Xiao Yu
    • , Zi-Qi Lu
    • , Yong Wang
    • , Wang-Wei Ye
    • , Jun-Xiang Shan
    •  & Hong-Xuan Lin
  • Article
    | Open Access

    The association between leguminous plants and rhizobial bacteria is a paradigmatic example of a symbiosis driven by metabolic exchanges. Here, diCenzo et al. report the reconstruction and modelling of a genome-scale metabolic network of the plant Medicago truncatula nodulated by the bacterium Sinorhizobium meliloti.

    • George C. diCenzo
    • , Michelangelo Tesi
    • , Thomas Pfau
    • , Alessio Mengoni
    •  & Marco Fondi
  • Article
    | Open Access

    Gene isoforms result from variable transcription start sites (TSSs) and polyadenylation sites (PASs) at the end of transcripts. Here, the authors perform transcript isoform sequencing and find widespread promoter- proximal transcriptional termination in Arabidopsis, suggesting this may represent a checkpoint that regulates plant gene expression.

    • Quentin Angelo Thomas
    • , Ryan Ard
    • , Jinghan Liu
    • , Bingnan Li
    • , Jingwen Wang
    • , Vicent Pelechano
    •  & Sebastian Marquardt
  • Article
    | Open Access

    Snow algae bloom along the coast of Antarctica and are likely to be biogeochemically important. Here, the authors produced the first map of such blooms, show that they are driven by warmer temperatures and proximity to birds and mammals, and are likely to increase given projected climate changes.

    • Andrew Gray
    • , Monika Krolikowski
    • , Peter Fretwell
    • , Peter Convey
    • , Lloyd S. Peck
    • , Monika Mendelova
    • , Alison G. Smith
    •  & Matthew P. Davey
  • Article
    | Open Access

    Alfalfa is an important forage crop, but genetic improvement is challenging due to the lack of a reference genome and an efficient genome editing protocol. Here, the authors report the chromosome-level assembly of the autotetraploid genome and a CRISPR/Cas9-based transgene-free genome editing protocol.

    • Haitao Chen
    • , Yan Zeng
    • , Yongzhi Yang
    • , Lingli Huang
    • , Bolin Tang
    • , He Zhang
    • , Fei Hao
    • , Wei Liu
    • , Youhan Li
    • , Yanbin Liu
    • , Xiaoshuang Zhang
    • , Ru Zhang
    • , Yesheng Zhang
    • , Yongxin Li
    • , Kun Wang
    • , Hua He
    • , Zhongkai Wang
    • , Guangyi Fan
    • , Hui Yang
    • , Aike Bao
    • , Zhanhuan Shang
    • , Jianghua Chen
    • , Wen Wang
    •  & Qiang Qiu
  • Article
    | Open Access

    One of the major photosynthetic light-harvesting complexes (LHCs) are fucoxanthin chlorophyll a/c-binding proteins (FCPs), which are present in diatoms, a major group of algae. Here, the authors present the cryo-EM structure of the photosystem I-FCP (PSI-FCPI) supercomplex isolated from the marine centric diatom Chaetoceros gracilis that contains 16 FCPI subunits surrounding the PSI core and discuss possible excitation energy transfer pathways.

    • Ryo Nagao
    • , Koji Kato
    • , Kentaro Ifuku
    • , Takehiro Suzuki
    • , Minoru Kumazawa
    • , Ikuo Uchiyama
    • , Yasuhiro Kashino
    • , Naoshi Dohmae
    • , Seiji Akimoto
    • , Jian-Ren Shen
    • , Naoyuki Miyazaki
    •  & Fusamichi Akita
  • Article
    | Open Access

    TRANSPARENT TESTA19 (TT19) encodes a glutathione S-transferase which functions in anthocyanin stabilization and vacuolar transport. Here, by tt19 suppressor screening, the authors show that RDR6/SGS3/DCL4 siRNA pathway constituents synergistically interact with components of the flavonoid pathway to control carbon metabolism.

    • Nan Jiang
    • , Aimer Gutierrez-Diaz
    • , Eric Mukundi
    • , Yun Sun Lee
    • , Blake C. Meyers
    • , Marisa S. Otegui
    •  & Erich Grotewold
  • Article
    | Open Access

    Cytosolic ion gradients in growing pollen tubes are thought to be required for polar growth. Here the authors show that the Arabidopsis plasma membrane H+ ATPases, AHA6, AHA8, and AHA9, maintain tip-to-shank proton gradients, oscillations in cytosolic pH and actin organization to enable pollen tube elongation.

    • Robert D. Hoffmann
    • , Maria Teresa Portes
    • , Lene Irene Olsen
    • , Daniel Santa Cruz Damineli
    • , Maki Hayashi
    • , Custódio O. Nunes
    • , Jesper T. Pedersen
    • , Pedro T. Lima
    • , Cláudia Campos
    • , José A. Feijó
    •  & Michael Palmgren
  • Article
    | Open Access

    Auxin-mediated recruitment of AUX/IAAs by the F-box protein TIR1 prompts rapid AUX/IAA ubiquitylation and degradation. By resolving auxin receptor topology, the authors show that intrinsically disordered regions near the degrons of two Aux/IAA proteins reinforce complex assembly and position Aux/IAAs for ubiquitylation.

    • Michael Niemeyer
    • , Elena Moreno Castillo
    • , Christian H. Ihling
    • , Claudio Iacobucci
    • , Verona Wilde
    • , Antje Hellmuth
    • , Wolfgang Hoehenwarter
    • , Sophia L. Samodelov
    • , Matias D. Zurbriggen
    • , Panagiotis L. Kastritis
    • , Andrea Sinz
    •  & Luz Irina A. Calderón Villalobos
  • Article
    | Open Access

    Sequence depth and read length determine the quality of genome assembly. Here, the authors leverage a set of PacBio reads to develop guidelines for sequencing and assembly of complex plant genomes in order to allocate finite resources using maize as an example.

    • Shujun Ou
    • , Jianing Liu
    • , Kapeel M. Chougule
    • , Arkarachai Fungtammasan
    • , Arun S. Seetharam
    • , Joshua C. Stein
    • , Victor Llaca
    • , Nancy Manchanda
    • , Amanda M. Gilbert
    • , Sharon Wei
    • , Chen-Shan Chin
    • , David E. Hufnagel
    • , Sarah Pedersen
    • , Samantha J. Snodgrass
    • , Kevin Fengler
    • , Margaret Woodhouse
    • , Brian P. Walenz
    • , Sergey Koren
    • , Adam M. Phillippy
    • , Brett T. Hannigan
    • , R. Kelly Dawe
    • , Candice N. Hirsch
    • , Matthew B. Hufford
    •  & Doreen Ware
  • Article
    | Open Access

    Plant metacaspases mediate immune response following activation by Ca2+. Here, via crystallography and functional analyses, the authors show that a linker domain in Arabidopsis Metacaspase 4 blocks substrate access to the active site but is cleaved multiple times in the presence of Ca2+ to allow enzyme activation.

    • Ping Zhu
    • , Xiao-Hong Yu
    • , Cheng Wang
    • , Qingfang Zhang
    • , Wu Liu
    • , Sean McSweeney
    • , John Shanklin
    • , Eric Lam
    •  & Qun Liu
  • Article
    | Open Access

    WUSCHEL is a homeodomain transcription factor that is essential for stem cell maintenance in the plant shoot apical meristem. Here, via structural and biochemical approaches, Sloan et al. show that strong WUSCHEL binding to preferential target motifs can be attributed to dimer formation that stabilizes DNA binding.

    • Jeremy Sloan
    • , Jana P. Hakenjos
    • , Michael Gebert
    • , Olga Ermakova
    • , Andrea Gumiero
    • , Gunter Stier
    • , Klemens Wild
    • , Irmgard Sinning
    •  & Jan U. Lohmann
  • Article
    | Open Access

    Segregation of an MSH1 RNAi transgene produces non-genetic memory that displays transgenerational inheritance in Arabidopsis. Here, the authors compare memory and non-memory full-sib progenies to show the involvement of DNA methylation reprogramming, involving the RdDM pathway, in transition to a heritable memory state.

    • Xiaodong Yang
    • , Robersy Sanchez
    • , Hardik Kundariya
    • , Tom Maher
    • , Isaac Dopp
    • , Rosemary Schwegel
    • , Kamaldeep Virdi
    • , Michael J. Axtell
    •  & Sally A. Mackenzie
  • Article
    | Open Access

    Cytokinin and auxin are two major hormonal regulators of plant growth. Here the authors identify SYAC1, a gene that is synergistically activated by the two hormones being applied together, and show that it is required for normal growth while negatively impacting pathogen resistance.

    • Andrej Hurný
    • , Candela Cuesta
    • , Nicola Cavallari
    • , Krisztina Ötvös
    • , Jerome Duclercq
    • , Ladislav Dokládal
    • , Juan Carlos Montesinos
    • , Marçal Gallemí
    • , Hana Semerádová
    • , Thomas Rauter
    • , Irene Stenzel
    • , Geert Persiau
    • , Freia Benade
    • , Rishikesh Bhalearo
    • , Eva Sýkorová
    • , András Gorzsás
    • , Julien Sechet
    • , Gregory Mouille
    • , Ingo Heilmann
    • , Geert De Jaeger
    • , Jutta Ludwig-Müller
    •  & Eva Benková
  • Article
    | Open Access

    The flowering regulator FLC shows upregulation and downregulation phases along with long-term past temperature in Arabidopsis halleri. Here, the authors reveal that H3K27me3-mediated chromatin regulation at AhgFLC provides the ability to respond to both the seasonal temperature trends and the perennial life cycle.

    • Haruki Nishio
    • , Diana M. Buzas
    • , Atsushi J. Nagano
    • , Koji Iwayama
    • , Masayuki Ushio
    •  & Hiroshi Kudoh
  • Article
    | Open Access

    Enzymatic inactivation of gibberellins and auxin, via GA2ox3 and DAO respectively, contributes to hormone homeostasis in plants. Here Takehara et al. show that both enzymes multimerize in a substrate-concentration-dependent manner, and that this multimerization leads to increased enzyme activity.

    • Sayaka Takehara
    • , Shun Sakuraba
    • , Bunzo Mikami
    • , Hideki Yoshida
    • , Hisako Yoshimura
    • , Aya Itoh
    • , Masaki Endo
    • , Nobuhisa Watanabe
    • , Takayuki Nagae
    • , Makoto Matsuoka
    •  & Miyako Ueguchi-Tanaka
  • Article
    | Open Access

    Signaling via the D14L karrikin receptor conditions rice roots for association with arbuscular mycorrhizal fungi. Here, Choi et al. show that SMAX1, a rice homolog of an Arabidopsis repressor of karrikin signaling, acts downstream of D14L to suppress mycorrhizal symbiosis and strigolactone biosynthesis.

    • Jeongmin Choi
    • , Tak Lee
    • , Jungnam Cho
    • , Emily K. Servante
    • , Boas Pucker
    • , William Summers
    • , Sarah Bowden
    • , Mehran Rahimi
    • , Kyungsook An
    • , Gynheung An
    • , Harro J. Bouwmeester
    • , Emma J. Wallington
    • , Giles Oldroyd
    •  & Uta. Paszkowski
  • Article
    | Open Access

    Targeted delivery of nanomaterials to subcellular compartments could allow precision engineering of plant function. Here, Santana et al. show that quantum dots functionalized with a rationally-designed targeting peptide are preferentially delivered to chloroplasts where they can be used to tune organellar redox status.

    • Israel Santana
    • , Honghong Wu
    • , Peiguang Hu
    •  & Juan Pablo Giraldo
  • Article
    | Open Access

    Plant evolution is intimately associated with fungal partners. Here the authors provide evidence that Physcomitrella patens MACRO2, a gene likely derived from early mycorrhizae-like fungi, was transferred to early land plants and plays an important role in regulating stem cell growth and gametophore development in moss.

    • Shuanghua Wang
    • , Yanlong Guan
    • , Qia Wang
    • , Jinjie Zhao
    • , Guiling Sun
    • , Xiangyang Hu
    • , Mark P. Running
    • , Hang Sun
    •  & Jinling Huang
  • Article
    | Open Access

    In plants, branching is regulated by both hormones and external cues such as light. Here the authors show that in Arabidopsis, the phytochrome A-signaling components FHY3 and FAR1, and SMXL proteins that repress strigolactone signaling, both interact with SPL proteins to control expression of the branching regulator BRC1.

    • Yurong Xie
    • , Yang Liu
    • , Mengdi Ma
    • , Qin Zhou
    • , Yongping Zhao
    • , Binbin Zhao
    • , Baobao Wang
    • , Hongbin Wei
    •  & Haiyang Wang
  • Article
    | Open Access

    The fungal plant pathogen Zymoseptoria tritici is a major threat to wheat yield. Here Seybold et al. show that Z. tritici can suppress immune responses not only in infected tissue but also on other leaves, a phenomenon termed “systemic induced susceptibility” that is correlated with systemic changes in metabolite accumulation.

    • Heike Seybold
    • , Tobias J. Demetrowitsch
    • , M. Amine Hassani
    • , Silke Szymczak
    • , Ekaterina Reim
    • , Janine Haueisen
    • , Luisa Lübbers
    • , Malte Rühlemann
    • , Andre Franke
    • , Karin Schwarz
    •  & Eva H. Stukenbrock
  • Article
    | Open Access

    Halogenated plant natural products are rare and plant halogenation enzymes are thus far unknown. Here Kim et al. identify a dechloroacutumine halogenase from Common Moonseed that catalyzes the final chlorination step in the biosynthesis of acutumine, a chloroalkaloid with selective cytotoxicity to cultured T cells.

    • Colin Y. Kim
    • , Andrew J. Mitchell
    • , Christopher M. Glinkerman
    • , Fu-Shuang Li
    • , Tomáš Pluskal
    •  & Jing-Ke Weng
  • Article
    | Open Access

    Heat stress can activate heterochromatin-associated transposon elements (TEs). Here, the authors show that heat stress leads to global rearrangement of 3D genome and TEs activation closely correlates with 3D chromatin organization rearrangement in Arabidopsis.

    • Linhua Sun
    • , Yuqing Jing
    • , Xinyu Liu
    • , Qi Li
    • , Zhihui Xue
    • , Zhukuan Cheng
    • , Daowen Wang
    • , Hang He
    •  & Weiqiang Qian
  • Article
    | Open Access

    During plant innate immunity ROS is produced via the NADPH oxidase RBOHD. Here, Lee et al. show that RBOHD protein abundance is regulated through phosphorylation by the PBL13 receptor-like cytoplasmic kinase and via ubiquitination by PIRE, a newly identified E3 ubiquitin ligase.

    • DongHyuk Lee
    • , Neeraj K. Lal
    • , Zuh-Jyh Daniel Lin
    • , Shisong Ma
    • , Jun Liu
    • , Bardo Castro
    • , Tania Toruño
    • , Savithramma P. Dinesh-Kumar
    •  & Gitta Coaker
  • Article
    | Open Access

    Interspecies interactions, including those between plants and pollinators, can involve deception. The authors characterize the molecular development of Nigella damascena pseudonectaries, and their adaptive function in attracting specific pollinators to concealed nectaries with visual cues.

    • Hong Liao
    • , Xuehao Fu
    • , Huiqi Zhao
    • , Jie Cheng
    • , Rui Zhang
    • , Xu Yao
    • , Xiaoshan Duan
    • , Hongyan Shan
    •  & Hongzhi Kong
  • Article
    | Open Access

    Most chloroplast proteins are imported from the cytosol and thus transiently exposed to the cytosolic proteasome. Here the authors show that impairment of the cytosolic proteasome can elevate precursor protein abundance and photosynthetic activity suggesting that cytosolic protein turnover is a means to tune plastid function.

    • Julia Grimmer
    • , Stefan Helm
    • , Dirk Dobritzsch
    • , Gerd Hause
    • , Gerta Shema
    • , René P. Zahedi
    •  & Sacha Baginsky
  • Article
    | Open Access

    Temperature modulates plant development and environmental responses. Here, the authors show that increasing ambient temperature reduces the number of sub-nuclear photobodies in Arabidopsis by promoting selective disassembly of thermo-unstable photobodies in a manner dependent on phytochrome B’s photosensory module.

    • Joseph Hahm
    • , Keunhwa Kim
    • , Yongjian Qiu
    •  & Meng Chen
  • Article
    | Open Access

    Litsea cubeba belongs to the Lauraceae family within the Magnoliids clade. Here, the authors assemble its genome and reveal divergence of inflorescence and sexual differentiation, the phylogenetic relationships across the Lauraceae and related species, and biosynthetic genes related to essential oil synthesis.

    • Yi-Cun Chen
    • , Zhen Li
    • , Yun-Xiao Zhao
    • , Ming Gao
    • , Jie-Yu Wang
    • , Ke-Wei Liu
    • , Xue Wang
    • , Li-Wen Wu
    • , Yu-Lian Jiao
    • , Zi-Long Xu
    • , Wen-Guang He
    • , Qi-Yan Zhang
    • , Chieh-Kai Liang
    • , Yu-Yun Hsiao
    • , Di-Yang Zhang
    • , Si-Ren Lan
    • , Laiqiang Huang
    • , Wei Xu
    • , Wen-Chieh Tsai
    • , Zhong-Jian Liu
    • , Yves Van de Peer
    •  & Yang-Dong Wang
  • Article
    | Open Access

    HY5 is a bZIP transcription factor and master regulator of photomorphogenesis in plants. Here, the authors show that in addition to regulating transcription, HY5 promotes the activity of the GSK3-like kinase BIN2 thus negatively regulating hypocotyl elongation by suppressing brassinosteroid signaling.

    • Jian Li
    • , William Terzaghi
    • , Yanyan Gong
    • , Congran Li
    • , Jun-Jie Ling
    • , Yangyang Fan
    • , Nanxun Qin
    • , Xinqi Gong
    • , Danmeng Zhu
    •  & Xing Wang Deng
  • Article
    | Open Access

    The spectra of light used by photosynthetic organisms are determined by their pigmentation colour palettes. Here Liu et al. show that a genetically-encoded chimera of light-harvesting proteins from plants and reaction centres from purple bacteria allows for polychromatic solar energy harvesting.

    • Juntai Liu
    • , Vincent M. Friebe
    • , Raoul N. Frese
    •  & Michael R. Jones
  • Article
    | Open Access

    Acyl-acyl carrier protein reductase (AAR) and aldehyde deformylating oxygenase (ADO) are the two enzymes in a cyanobacterial alkane biosynthesis pathway that is of interest for biofuel production. Here the authors provide insights into the catalytic mechanisms of AAR and the coupling between the two enzymes by determining the crystal structures of AAR alone and three AAR–ADO complexes with various bound ligands.

    • Yu Gao
    • , Hongmei Zhang
    • , Minrui Fan
    • , Chenjun Jia
    • , Lifang Shi
    • , Xiaowei Pan
    • , Peng Cao
    • , Xuelin Zhao
    • , Wenrui Chang
    •  & Mei Li
  • Article
    | Open Access

    Plants regulate chlorophyll levels to optimise photosynthesis. Here Wang et al. describe two paralogous thylakoid proteins, BCM1 and BCM2, which stimulate chlorophyll biosynthesis and attenuate chlorophyll degradation respectively through interaction with the Mg-chelatase-stimulating factor GUN4 and Mg-dechelatase isoform SGR1.

    • Peng Wang
    • , Andreas S. Richter
    • , Julius R. W. Kleeberg
    • , Stefan Geimer
    •  & Bernhard Grimm
  • Article
    | Open Access

    Kucha is a rare variety of tea tree that produces the non-stimulatory theacrine instead of caffeine. Here the authors show that theacrine synthase from Kucha has N9-methyltransferase activity resulting from amino acid substitutions that explain substrate specificity and could potentially guide production of caffeine-free tea.

    • Yue-Hong Zhang
    • , Yi-Fang Li
    • , Yongjin Wang
    • , Li Tan
    • , Zhi-Qin Cao
    • , Chao Xie
    • , Guo Xie
    • , Hai-Biao Gong
    • , Wan-Yang Sun
    • , Shu-Hua Ouyang
    • , Wen-Jun Duan
    • , Xiaoyun Lu
    • , Ke Ding
    • , Hiroshi Kurihara
    • , Dan Hu
    • , Zhi-Min Zhang
    • , Ikuro Abe
    •  & Rong-Rong He
  • Article
    | Open Access

    Pollen is an abundant material; but, currently has limited applications. Here, the authors turn pollen grains into soft microgel by de-esterification of pectin molecules and explore the mechanical and structural changes of the pollen grains using physical and modelling approaches.

    • Teng-Fei Fan
    • , Soohyun Park
    • , Qian Shi
    • , Xingyu Zhang
    • , Qimin Liu
    • , Yoohyun Song
    • , Hokyun Chin
    • , Mohammed Shahrudin Bin Ibrahim
    • , Natalia Mokrzecka
    • , Yun Yang
    • , Hua Li
    • , Juha Song
    • , Subra Suresh
    •  & Nam-Joon Cho
  • Article
    | Open Access

    In Brassicaceae, interaction between the pollen-derived peptide ligand SP11 and the pistil-expressed receptor kinase SRK leads to self-incompatibility. Here the authors provide evidence that in Arabidopsis dominant self-compatibility inducers evolved at least twice via insertion of inverted repeats in the SRK locus.

    • Sota Fujii
    • , Hiroko Shimosato-Asano
    • , Mitsuru Kakita
    • , Takashi Kitanishi
    • , Megumi Iwano
    •  & Seiji Takayama
  • Article
    | Open Access

    SnRK2 protein kinases play key roles in signaling during plant responses to abiotic stress. Here Soma et al. report three Arabidopsis Raf-like MAP kinase kinase kinases phosphorylate and activate a subclass of SnRK2s that rapidly respond to osmotic stress independently of ABA signaling.

    • Fumiyuki Soma
    • , Fuminori Takahashi
    • , Takamasa Suzuki
    • , Kazuo Shinozaki
    •  & Kazuko Yamaguchi-Shinozaki
  • Article
    | Open Access

    The supramolecular organization of PSII-LHCII supercomplexes determines the plant thylakoid structure. Here, via structural mass spectrometry, Albanese et al. show how stroma-exposed N-termini of LHCII subunits, interacting with each other in adjacent membranes, can mediate membrane folding in grana stacks.

    • Pascal Albanese
    • , Sem Tamara
    • , Guido Saracco
    • , Richard A. Scheltema
    •  & Cristina Pagliano
  • Article
    | Open Access

    Asymmetric division of the Arabidopsis zygote produces apical and basal cells that mainly develop into embryo and suspensor, respectively. Here, Zhou et al. show that de novo transcription and selective RNA turnover establish distinct apical and basal transcriptomes as early as the 1-cell stage of embryo development.

    • Xuemei Zhou
    • , Zhenzhen Liu
    • , Kun Shen
    • , Peng Zhao
    •  & Meng-Xiang Sun
  • Article
    | Open Access

    The Arabidopsis UVR8 photoreceptor is a dimer that monomerizes in response to UV-B. Here the authors show that cryptochromes contribute to UV tolerance and facilitate UVR8 redimerization via induction of RUP proteins in response to blue light, modifying UV-B signalling in polychromatic light environments.

    • Nicolas Tissot
    •  & Roman Ulm
  • Article
    | Open Access

    Resolving the kinetics of energy dissipation during photosynthesis is challenging due to complex photophysics and the coexistence of multiple antenna proteins. Here Son et al. overcome this by applying ultrabroadband 2D spectroscopy to LHCII reconstituted in lipid nanodiscs, revealing mechanisms of dissipation enhanced by the membrane.

    • Minjung Son
    • , Alberta Pinnola
    • , Samuel C. Gordon
    • , Roberto Bassi
    •  & Gabriela S. Schlau-Cohen
  • Article
    | Open Access

    Karrikins are germination stimulants perceived by KAI2 in Arabidopsis. Here the authors show that Brassica tournefortii, a close relative to Arabidopsis, has multiple copies of KAI2 with amino acid substitutions that confer responsiveness to the specific karrikin compounds found in wildfire smoke.

    • Yueming Kelly Sun
    • , Jiaren Yao
    • , Adrian Scaffidi
    • , Kim T. Melville
    • , Sabrina F. Davies
    • , Charles S. Bond
    • , Steven M. Smith
    • , Gavin R. Flematti
    •  & Mark T. Waters
  • Article
    | Open Access

    RNA-directed DNA methylation (RdDM) is thought to silence newly inserted transposable elements (TEs) with RNA-independent mechanisms becoming more prominent as TEs age. Here, the authors show that RdDM continues to silence the oldest intact distal TEs in tomato and Arabidopsis suggesting a second, later phase of RdDM.

    • Zhengming Wang
    •  & David C. Baulcombe
  • Article
    | Open Access

    A concentration gradient of HAM transcription factors specifies apical-basal patterning in the Arabidopsis shoot apical meristem. Here, the authors show that epidermal expression of the ATML1 transcription factor defines this concentration gradient via activation of mobile micro RNA.

    • Han Han
    • , An Yan
    • , Lihong Li
    • , Yingfang Zhu
    • , Bill Feng
    • , Xing Liu
    •  & Yun Zhou