TaCR4-A过表达对小麦籽粒大小有正向调节作用。

IF 4.8 2区生物学 Q1 PLANT SCIENCES

BMC Plant Biology Pub Date : 2025-10-01 DOI:10.1186/s12870-025-07345-5

Qian Qian, Weiguo Hu, Yang Yu, Yang Liu, Yesong Tian, Xiaohong Zhang, Donghong Min

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引用次数: 0

摘要

背景：籽粒大小是影响小麦产量的一个关键因素。CRINKLY4 （CR4）受体样激酶在多种植物中调控表皮细胞分化和种子发育，但其在小麦中的功能尚不清楚。结果：在本研究中，我们鉴定了编码小麦中CRINKLY4受体样激酶同源物的TaCR4基因。通过构建TaCR4-A表达量增加的过表达（OE）小麦品系，发现OE品系的粒长、粒宽、粒厚和粒重均有所增加。细胞学分析表明，TaCR4-A过表达增加了小麦籽粒外果皮细胞的长度、宽度和面积。结论：本研究表明，TaCR4通过调节小麦籽粒表皮细胞的大小正向调节小麦籽粒大小。

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Overexpression of TaCR4-A positively regulates grain size in Triticum aestivum.

Background: Grain size is a critical factor that affects yield in wheat (Triticum aestivum). CRINKLY4 (CR4) receptor-like kinase regulates epidermal cell differentiation and seed development in several plant species, yet its functional role in wheat remains to be clarified.

Results: In this study, we identified the TaCR4 gene, which encodes the CRINKLY4 receptor-like kinase homolog in wheat. We created overexpressing (OE) wheat lines with increased TaCR4-A expression and found that the grain length, width, thickness, and weight of the OE lines increased. Cytological analysis revealed that the overexpression of TaCR4-A increased the length, width, and area of wheat grain outer pericarp cells.

Conclusions: This study demonstrated that TaCR4 positively regulates wheat grain size by regulating the size of grain epidermal cells.

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来源期刊

BMC Plant Biology 生物-植物科学

CiteScore

8.40

自引率

3.80%

发文量

539

审稿时长

3.8 months

期刊介绍： BMC Plant Biology is an open access, peer-reviewed journal that considers articles on all aspects of plant biology, including molecular, cellular, tissue, organ and whole organism research.