000 03658nab|a22004817a|4500
001 69603
003 MX-TxCIM
005 20251126092200.0
008 2511252025|||||cc ||p|op||||00||0|eng|dd
022 _a2095-5421
022 _a2214-5141 (Online)
024 8 _ahttps://doi.org/10.1016/j.cj.2025.06.002
040 _aMX-TxCIM
041 _aeng
100 0 _aSiyang Liu
_937244
245 1 0 _aTaIAA10-6D orchestrates processing quality and grain yield by modulating glutenin/gliadin ratio and plant morphogenesis in wheat
260 _aChina :
_bElsevier B.V. ;
_bKeAi Communications Co. Ltd.,
_c2025.
500 _aPeer review
500 _aOpen Access
520 _aHigh molecular weight glutenin subunits (HMW-GS), major components of seed storage proteins in wheat, have large effects on processing quality. GLU-1 genes encode HMW-GS and their expression is mainly controlled at the transcriptional level by interactions between cis-regulatory elements and transcription factors. We previously identified an Aux/IAA transcription factor TaIAA10-6D that bound to a conserved cis-regulatory module CCRM1-1, the most essential conserved cis-regulatory module in GLU-1. Here, we confirmed the binding of TaIAA10-6D to CCRM1-1 using yeast one hybrid and dual-luciferase reporter assays. The enhanced expression of TaIAA10-6D suppressed glutenin accumulation and increased gliadin content. Dynamic transcriptome analyses revealed that TaIAA10-6D overexpression down-regulated glutenin and gliadin genes during an early stage of grain filling, but up-regulated gliadin genes during a late stage probably by endoplasmic reticulum stress, accounting for its effect on the trade-off between glutenin and gliadin. Rheological property and processing quality assays showed that TaIAA10-6D overproduction reduced stabilization time and bread quality, but enhanced cookie quality. Overexpression of TaIAA10-6D also reduced plant height, leaf size, kernel number and grain yield. We identified two major haplotypes of TaIAA10-6D, Hap I and Hap II, and developed a breeding-friendly diagnostic marker. Hap I conferred higher expression of TaIAA10-6D and concomitantly reduced plant height and kernel number, but had little effect on grain yield, contributing to lodging resistance without yield penalty. Hap I was subjected to positive selection in breeding. The findings provide a useful gene for wheat improvement and broaden insights into the regulatory machinery underpinning auxin-mediated quality formation, plant morphogenesis and yield gain.
546 _aText in English
597 _dNational Natural Science Foundation of China
_dChina Postdoctoral Science Foundation
_dChinese Academy of Agricultural Sciences (CAAS)
650 7 _aAgronomic characters
_2AGROVOC
_91008
650 7 _aAuxins
_2AGROVOC
_91015
650 7 _aTranscription factors
_2AGROVOC
_96527
650 7 _aProcessing quality
_2AGROVOC
_99916
650 7 _aSeed storage proteins
_2AGROVOC
_912517
650 7 _aTriticum aestivum
_2AGROVOC
_91296
700 0 _aLina Xie
_932205
700 0 _aHaibin Wu
_940696
700 0 _aDengan Xu
_95904
700 0 _aRui Che
_940692
700 0 _aWenfei Tian
_926337
700 0 _aBingyan Liu
_932206
700 0 _aYuheng Chao
_940691
700 0 _aYan Zhang
_916460
700 0 _aXianchun Xia
_9377
700 1 _aHe Zhonghu
_gGlobal Wheat Program
_8INT2411
_9838
700 0 _aShuanghe Cao
_95093
773 0 _tCrop Journal
_dChina : Elsevier B.V. ; KeAi Communications Co., 2025.
_x2095-5421
_gv. 13, no. 5, p. 1460-1469
_w56924
856 4 _yOpen Access through DSpace
_uhttps://hdl.handle.net/10883/36188
942 _cJA
_n0
_2ddc
999 _c69603
_d69595