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Chilling stress and loss of an exonuclease lead to biparental inheritance of plastids

The maternal inheritance of organelles (such as chloroplasts and mitochondria) is the rule in most eukaryotes. In tobacco, chilling stress during pollen development and deactivation of an exonuclease that degrades organellar DNA facilitate paternal plastid transmission, thereby revealing that both genetic and environmental factors determine organelle inheritance.

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Fig. 1: Low temperature and loss of DPD1 function increase paternal plastid transmission.


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This is a summary of: Chung, K. P. et al. Control of plastid inheritance by environmental and genetic factors. Nat. Plants (2023).

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Chilling stress and loss of an exonuclease lead to biparental inheritance of plastids. Nat. Plants 9, 9–10 (2023).

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