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支持水稻在低氧条件下萌发和胚芽鞘伸长的分子机制

Molecular Mechanisms Supporting Rice Germination and Coleoptile Elongation under Low Oxygen.

作者信息

Pucciariello Chiara

机构信息

PlantLab, Institute of Life Sciences, Scuola Superiore Sant'Anna, 56124 Pisa, Italy.

出版信息

Plants (Basel). 2020 Aug 15;9(8):1037. doi: 10.3390/plants9081037.

DOI:10.3390/plants9081037
PMID:32824201
原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC7465159/
Abstract

Rice germinates under submergence by exploiting the starch available in the endosperm and translocating sugars from source to sink organs. The availability of fermentable sugar under water allows germination with the protrusion of the coleoptile, which elongates rapidly and functions as a snorkel toward the air above. Depending on the variety, rice can produce a short or a long coleoptile. Longer length entails the involvement of a functional transport of auxin along the coleoptile. This paper is an overview of rice coleoptiles and the studies undertaken to understand its functioning and role under submergence.

摘要

水稻通过利用胚乳中可用的淀粉并将糖分从源器官转运到库器官，在淹水条件下萌发。水下可发酵糖的存在使得水稻能够随着胚芽鞘的伸出而萌发，胚芽鞘迅速伸长并起到通向水面上方空气的通气管作用。根据品种不同，水稻的胚芽鞘有长有短。较长的胚芽鞘需要生长素沿着胚芽鞘进行功能性运输。本文概述了水稻胚芽鞘以及为了解其在淹水条件下的功能和作用所开展的研究。

https://cdn.ncbi.nlm.nih.gov/pmc/blobs/d053/7465159/d99bdf18c5f4/plants-09-01037-g001.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/d053/7465159/d99bdf18c5f4/plants-09-01037-g001.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/d053/7465159/d99bdf18c5f4/plants-09-01037-g001.jpg

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2
A calcineurin B-like protein participates in low oxygen signalling in rice.一种类钙调神经磷酸酶B蛋白参与水稻的低氧信号传导。
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Ethylene-mediated nitric oxide depletion pre-adapts plants to hypoxia stress.乙烯介导的一氧化氮耗竭使植物预先适应缺氧胁迫。
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Rice (N Y). 2025 Mar 8;18(1):10. doi: 10.1186/s12284-025-00765-9.
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Genome-wide association study to identify candidate genes for submergence tolerance during rice seed germination.全基因组关联研究以鉴定水稻种子萌发期耐淹性的候选基因。
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