Seed-Specific Overexpression of SPL12 and IPA1 Improves Seed Dormancy and Grain Size in Rice.
Seed-Specific Overexpression of SPL12 and IPA1 Improves Seed Dormancy and Grain Size in Rice.
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SPL12 和 IPA1 的种子特异性过表达可改善水稻种子休眠和籽粒大小
DOI:
10.3389/fpls.2020.532771
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发表时间:
2020
影响因子:
5.6
通讯作者:
Liu S
中科院分区:
文献类型:
--
作者:
Qin M;Zhang Y;Yang Y;Miao C;Liu S
Pre-harvest sprouting (PHS) often results in reduced grain yield and quality and is a major problem in cereal production. Improved seed dormancy would inhibit PHS. Here we show that seed-specific overexpression of two SQUAMOSA-PROMOTER BINDING PROTEIN-LIKE (SPL) genes SPL12 and IPA1 enhances seed dormancy and inhibits PHS without noticeable effects on shoot architecture in rice. In addition, seed-specific overexpression of IPA1 also increases grain size and thus improves grain productivity. Furthermore, our results suggest that SPL12 enhances the seed dormancy through directly regulating many genes in the gibberellin (GA) pathway. This research provides an efficient method to suppress PHS and will facilitate breeding elite crop varieties.
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