Genetically optimizing soybean nodulation improves yield and protein content

IF 15.8 1区生物学 Q1 PLANT SCIENCES

Nature Plants Pub Date : 2024-05-09 DOI:10.1038/s41477-024-01696-x

Xiangbin Zhong, Jie Wang, Xiaolei Shi, Mengyan Bai, Cuicui Yuan, Chenlin Cai, Nan Wang, Xiaomin Zhu, Huaqin Kuang, Xin Wang, Jiaqing Su, Xin He, Xiao Liu, Wenqiang Yang, Chunyan Yang, Fanjiang Kong, Ertao Wang, Yuefeng Guan

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引用次数: 0

Abstract

Symbiotic nitrogen fixation in legume nodules requires substantial energy investment from host plants, and soybean (Glycine max (L.) supernodulation mutants show stunting and yield penalties due to overconsumption of carbon sources. We obtained soybean mutants differing in their nodulation ability, among which rhizobially induced cle1a/2a (ric1a/2a) has a moderate increase in nodule number, balanced carbon allocation, and enhanced carbon and nitrogen acquisition. In multi-year and multi-site field trials in China, two ric1a/2a lines had improved grain yield, protein content and sustained oil content, demonstrating that gene editing towards optimal nodulation improves soybean yield and quality. This study shows that optimizing soybean nodulation, rather than supernodulation, through editing improves N and C assimilation by balancing source–sink relationships. As a result, soybean yield and protein content are simultaneously increased in field conditions.

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通过基因优化大豆拔节可提高产量和蛋白质含量

豆科植物结核中的共生固氮需要宿主植物投入大量的能量，而大豆（Glycine max (L.)）超结核突变体由于过度消耗碳源而导致发育不良和产量下降。我们获得了不同结瘤能力的大豆突变体，其中根瘤菌诱导的 cle1a/2a（ric1a/2a）具有结瘤数量适度增加、碳分配平衡、碳氮获取增强等特点。在中国进行的多年多地田间试验中，两个 ric1a/2a 品系的谷物产量、蛋白质含量和持续含油量均有所提高，这表明通过基因编辑实现最佳结瘤可提高大豆的产量和质量。

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来源期刊

Nature Plants PLANT SCIENCES-

CiteScore

25.30

自引率

2.20%

发文量

196

期刊介绍： Nature Plants is an online-only, monthly journal publishing the best research on plants — from their evolution, development, metabolism and environmental interactions to their societal significance.