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Altered expression of maize PLASTOCHRON1 enhances biomass and seed yield by extending cell division duration

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    0475688 - ÚEB 2018 RIV GB eng J - Článek v odborném periodiku
    Sun, X. - Cahill, J. - Van Hautegem, T. - Feys, K. - Whipple, C. - Novák, Ondřej - Delbare, S. - Versteele, C. - Demuynck, C. - De Block, J. - Storme, V. - Claeys, H. - Van Lijsebettens, M. - Coussens, G. - Ljung, K. - De Vliegher, A. - Muszynski, M. - Inzé, D. - Nelissen, H.
    Altered expression of maize PLASTOCHRON1 enhances biomass and seed yield by extending cell division duration.
    Nature Communications. Roč. 8, MAR 16 (2017), č. článku 14752. E-ISSN 2041-1723
    Institucionální podpora: RVO:61389030
    Klíčová slova: organ size * arabidopsis-thaliana * gene-expression * leaf size * growth * cytochrome-p450 * protein * plants * inference * mechanism
    Obor OECD: Cell biology
    Impakt faktor: 12.353, rok: 2017

    Maize is the highest yielding cereal crop grown worldwide for grain or silage. Here, we show that modulating the expression of the maize PLASTOCHRON1 (ZmPLA1) gene, encoding a cytochrome P450 (CYP78A1), results in increased organ growth, seedling vigour, stover biomass and seed yield. The engineered trait is robust as it improves yield in an inbred as well as in a panel of hybrids, at several locations and over multiple seasons in the field. Transcriptome studies, hormone measurements and the expression of the auxin responsive DR5(rev): mRFPer marker suggest that PLA1 may function through an increase in auxin. Detailed analysis of growth over time demonstrates that PLA1 stimulates the duration of leaf elongation by maintaining dividing cells in a proliferative, undifferentiated state for a longer period of time. The prolonged duration of growth also compensates for growth rate reduction caused by abiotic stresses.
    Trvalý link: http://hdl.handle.net/11104/0272342

     
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