Plant physiology

Plant physiology is a sub-discipline of botany concerned with the physical, chemical and biological functioning of plants.

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  • News and Views |

    A new protein degradation pathway driven by late-endosome-localized MULTIDRUG AND TOXIC COMPOUND EXTRUSION (MATE) efflux transporters opposes autophagy at the onset of senescence. Paradoxically, the new pathway requires a central component of autophagy.

    • Ulrike Zentgraf
    Nature Plants 5, 129-130
  • News and Views |

    The vacuole is a plant’s major phosphate (Pi) pool. Cellular Pi homeostasis highly depends on shuttling Pi between vacuoles and the cytosol. Glycerol 3-phosphate transporter types have now been identified as tonoplast-localized vacuolar Pi efflux transporters, integrating vacuolar Pi transport systems in plants.

    • Mingda Luan
    •  & Wenzhi Lan
    Nature Plants 5, 9-10
  • News and Views |

    The emergence of vascular plants requires tightly regulated mechanisms to control the photosynthate transporting system. For phloem establishment and carbon allocation to sink tissues, a novel translational regulatory network involving a zinc-finger protein and RNA G-quadruplex is now revealed for the first time.

    • Yiliang Ding
    •  & Chun Kit Kwok
    Nature Plants 4, 325-326
  • News and Views |

    Resistance to moving sugars from foliage to roots is high in trees, suggesting that the transport mechanism found in herbs might not work in trees. Now with new measurements of phloem structure and leaf turgor pressure, it has been shown that the Münch pressure-flow hypothesis can also explain sugar transport in tall trees.

    • Michael G. Ryan
    •  & Elisabeth M. R. Robert
    Nature Plants 3, 922-923