文章基本信息

标题：Mitigating tradeoffs in plant breeding
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作者：Sangam Lal Dwivedi ; Matthew Paul Reynolds ; Rodomiro Ortiz 等
期刊名称：iScience
印刷版ISSN：2589-0042
出版年度：2021
卷号：24
期号：9
页码：1-22
DOI：10.1016/j.isci.2021.102965
语种：English
出版社：Elsevier
摘要：SummaryTradeoffs among plant traits help maintain relative fitness under unpredictable conditions and maximize reproductive success. However, modifying tradeoffs is a breeding challenge since many genes of minor effect are involved. The intensive crosstalk and fine-tuning between growth and defense responsive phytohormones via transcription factors optimizes growth, reproduction, and stress tolerance. There are regulating genes in grain crops that deploy diverse functions to overcome tradeoffs, e.g., miR-156-IPA1regulates crosstalk between growth and defense to achieve high disease resistance and yield, whileOsALDH2B1loss of function causes imbalance among defense, growth, and reproduction in rice.GNI-A1regulates seed number and weight in wheat by suppressing distal florets and altering assimilate distribution of proximal seeds in spikelets. Knocking out ABA-induced transcription repressors (AITRs) enhances abiotic stress adaptation without fitness cost inArabidopsis. DeployingAITRshomologs in grain crops may facilitate breeding. This knowledge suggests overcoming tradeoffs through breeding may expose new ones.Graphical abstractDisplay OmittedBiological sciences; Biotechnology; Plant biology; Plant biotechnology; Plant Genetics