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Effects of TaMTL-Edited Mutations on Grain Phenotype and Storage Component Composition in Wheat

Authors :
Huali Tang
Shuangxi Zhang
Mei Yu
Ke Wang
Yang Yu
Yuliang Qiu
Yanan Chang
Zhishan Lin
Lipu Du
Daolin Fu
Zichao Li
Xingguo Ye
Source :
Agriculture, Vol 12, Iss 5, p 587 (2022)
Publication Year :
2022
Publisher :
MDPI AG, 2022.

Abstract

Wheat nutrition and processing-quality are primarily based on the endosperm ingredients. However, the effect of embryos on grain traits and components remains unclear. In this study, we found that in the cross-pollinated and self-pollinated progenies of the four wheat mtl mutants (mtl-A, mtl-AD, mtl-BD, and mtl-ABD) the haploid induction rates were 0–15.6% and 0–14.1%, and the embryo abortion rates were 0–27.4% and 0–24.1%, respectively, in which mtl-A had no effect on haploid induction and embryo development. The embryoless grains (ELG) were comparable to the normal grains (NG) from mtl-AD, mtl-BD, and mtl-ABD in grain length, grain width and thousand-kernel weight, but the grain traits were significantly less than those in NG from mutant mtl-A. During grain filling period, mtl-ABD had similar ELG ratio and amount of starch granule (SG) and protein body (PB) in ELG and NG. At maturity stage, the morphological features of A-type and B-type SG in ELG were similar to those in NG in mtl mutants; however, amylose, gliadin, and glutenin contents were higher in ELG, and total starch, albumin and globulin contents were higher in NG. Our results clarified the effect of the wheat mtl mutants on haploid induction and grain traits and nutrition composition in this crop, and provided new clues for studying the development of embryo and endosperm and their interaction in plants.

Details

Language :
English
ISSN :
20770472
Volume :
12
Issue :
5
Database :
Directory of Open Access Journals
Journal :
Agriculture
Publication Type :
Academic Journal
Accession number :
edsdoj.36bede250eb4d299fdcba576d2eb380
Document Type :
article
Full Text :
https://doi.org/10.3390/agriculture12050587