文献类型： 外文期刊

作者： Luo, Bowen ¹ ; Zhang, Guidi ² ; Yu, Ting ² ; Zhang, Chong ² ; Yang, Guohui ² ; Luo, Xianfu ² ; Zhang, Shuhao ² ; Guo, Jianyong ² ; Zhang, Haiying ² ; Zheng, Hao ⁴ ; Tang, Zirui ⁴ ; Li, Qile ⁴ ; Lan, Yuzhou ⁵ ; Ma, Peng ⁶ ; Nie, Zhi ⁸ ; Zhang, Xiao ² ; Liu, Dan ² ; Wu, Ling ² ; Gao, Duojiang ² ; Gao, Shiqiang ² ; Su, Shunzong ⁹ ; Guo, Jia ¹⁰ ; Gao, Shibin ¹ ;

作者机构： 1.State Key Lab Crop Gene Explorat & Utilizat Southw, Chengdu 611130, Sichuan, Peoples R China

2.Sichuan Agr Univ, Maize Res Inst, Chengdu 611130, Sichuan, Peoples R China

3.Minist Agr, Key Lab Biol & Genet Improvement Maize Southwest R, Chengdu 611130, Sichuan, Peoples R China

4.Sichuan Agr Univ, Coll Agron, Chengdu 611130, Sichuan, Peoples R China

5.Swedish Univ Agr Sci, Dept Plant Breeding, POB 190, S-23422 Lomma, Sweden

6.Mianyang Acad Agr Sci, Mianyang 621023, Sichuan, Peoples R China

7.Crop Characterist Resources Creat & Utilizat Key L, Mianyang, Peoples R China

8.Biotechnol & Nucl Technol Res Inst, Sichuan Acad Agr Sci, Chengdu, Peoples R China

9.Sichuan Agr Univ, Coll Resources, Chengdu 611130, Sichuan, Peoples R China

10.Sichuan Agr Univ, Rice Res Inst, Chengdu 611130, Sichuan, Peoples R China

期刊名称：THEORETICAL AND APPLIED GENETICS （ 影响因子：4.4； 五年影响因子：5.0 ）

ISSN： 0040-5752

年卷期： 2024 年 137 卷 7 期

页码：

收录情况： SCI

摘要： Phosphorus (P) is an essential element for plant growth, and its deficiency can cause decreased crop yield. This study systematically evaluated the low-phosphate (Pi) response traits in a large population at maturity and seedling stages, and explored candidate genes and their interrelationships with specific traits. The results revealed a greater sensitivity of seedling maize to low-Pi stress compared to that at maturity stage. The phenotypic response patterns to low-Pi stress at different stages were independent. Chlorophyll content was found to be a potential indicator for screening low-Pi-tolerant materials in the field. A total of 2900 and 1446 significantly associated genes at the maturity and seedling stages were identified, respectively. Among these genes, 972 were uniquely associated with maturity traits, while 330 were specifically detected at the seedling stage under low-Pi stress. Moreover, 768 and 733 genes were specifically associated with index values (low-Pi trait/normal-Pi trait) at maturity and seedling stage, respectively. Genetic network diagrams showed that the low-Pi response gene Zm00001d022226 was specifically associated with multiple primary P-related traits under low-Pi conditions. A total of 963 out of 2966 genes specifically associated with traits under low-Pi conditions or index values were found to be induced by low-Pi stress. Notably, ZmSPX4.1 and ZmSPX2 were sharply up-regulated in response to low-Pi stress across different lines or tissues. These findings advance our understanding of maize's response to low-Pi stress at different developmental stages, shedding light on the genes and pathways implicated in this response.