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Maize mesocotyl: Role in response to stress and deep‐sowing tolerance
Author(s) -
Niu Liangjie,
Hao Ruiqi,
Wu Xiaolin,
Wang Wei
Publication year - 2020
Publication title -
plant breeding
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.583
H-Index - 71
eISSN - 1439-0523
pISSN - 0179-9541
DOI - 10.1111/pbr.12804
Subject(s) - biology , sowing , agronomy , seedling , abiotic component , zea mays , germination , shoot , yield (engineering) , selection (genetic algorithm) , poaceae , ecology , materials science , artificial intelligence , computer science , metallurgy
Maize ( Zea mays L.) is one of the most important crops worldwide and is a model organism among cereal crops. Abiotic and biotic stresses are often present simultaneously and severely influence maize production, causing great yield losses worldwide. Therefore, the selection and cultivation of stress‐tolerant maize lines that adapt to various stresses is instrumental in addressing the problem of yield losses caused by stress. The maize mesocotyl is the crucial organ that pushes shoots out of deep water or soil after seed germination. It has a simple anatomy and exhibits rapid growth in the dark. In this article, we reviewed the studies on the elongation of the maize mesocotyl and the actions of phytohormones, especially under deep‐sowing conditions, and emphasized the role of the maize mesocotyl in response to environmental stress and deep‐sowing tolerance. We propose that the maize mesocotyl can serve as a selection organ for evaluating stress tolerance at the early seedling stage. We also identify future research fields that need further investigation in studies of the maize mesocotyl.