Up‐regulating GmETO1 improves phosphorus uptake and use efficiency by promoting root growth in soybean

• DOI: 10.1111/pce.13816
• Publication Date: 2020-06-09T03:49:31Z
• Authors: Hengyou Zhang; Yuming Yang; Chongyuan Sun; Xiaoqian Liu; Lingling Lv; Zhenbin Hu; Deyue Yu; Dan Zhang
• Keywords: Phosphorus deficiency; Expansin

Abstract Soybean is a high inorganic phosphate (Pi) demanding crop; its production strongly suppressed when Pi deficient in soil. However, the regulatory mechanism of deficiency tolerance soybean still largely unclear. Here, our findings highlighted pivotal role ethylene‐associated pathway to by comparatively studying transcriptome changes between representative Pi‐deficiency‐tolerant genotype NN94156 and sensitive Bogao under different supplies. By further integrating high‐confident linkage association mapping, we identified that Ethylene‐Overproduction Protein 1 ( GmETO1 ), an essential ethylene‐biosynthesis regulator, underlies major quantitative trait locus (QTL) q14‐2 controlling uptake. was also member ETO1 family members induced deficiency. Overexpressing significantly enhanced increasing proliferation elongation hairy roots, uptake use efficiency, conversely, silencing led opposite findings. We demonstrated Pi‐deficiency inducible genes critical for root morphological physiological traits including GmACP1 / 2 , Pht1;4 Expansin‐A7 Root Primordium Defective functioned downstream . Our study provides comprehensive insight into complex potential way genetically improve low‐Pi tolerance.