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小麦（Triticum aestivum）膨胀素的全基因组鉴定及耐冷和敏感小麦品种中膨胀素的表达分析。

Genome-wide identification of wheat (Triticum aestivum) expansins and expansin expression analysis in cold-tolerant and cold-sensitive wheat cultivars.

机构信息

College of Life Science, Northeast Agricultural University, Harbin, Heilongjiang, China.

Harbin University, Harbin, Heilongjiang, China.

出版信息

PLoS One. 2018 Mar 29;13(3):e0195138. doi: 10.1371/journal.pone.0195138. eCollection 2018.

DOI:10.1371/journal.pone.0195138
PMID:29596529
原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC5875846/
Abstract

Plant expansins are proteins involved in cell wall loosening, plant growth, and development, as well as in response to plant diseases and other stresses. In this study, we identified 128 expansin coding sequences from the wheat (Triticum aestivum) genome. These sequences belong to 45 homoeologous copies of TaEXPs, including 26 TaEXPAs, 15 TaEXPBs and four TaEXLAs. No TaEXLB was identified. Gene expression and sub-expression profiles revealed that most of the TaEXPs were expressed either only in root tissues or in multiple organs. Real-time qPCR analysis showed that many TaEXPs were differentially expressed in four different tissues of the two wheat cultivars-the cold-sensitive 'Chinese Spring (CS)' and the cold-tolerant 'Dongnongdongmai 1 (D1)' cultivars. Our results suggest that the differential expression of TaEXPs could be related to low-temperature tolerance or sensitivity of different wheat cultivars. Our study expands our knowledge on wheat expansins and sheds new light on the functions of expansins in plant development and stress response.

摘要

植物扩展蛋白参与细胞壁松弛、植物生长和发育，以及对植物疾病和其他胁迫的响应。在这项研究中，我们从小麦（Triticum aestivum）基因组中鉴定出 128 个扩展蛋白编码序列。这些序列属于 45 个同源 TaEXPs 拷贝，包括 26 个 TaEXPAs、15 个 TaEXPBs 和 4 个 TaEXLAs。未鉴定出 TaEXLB。基因表达和亚表达谱分析表明，大多数 TaEXPs 仅在根组织或多个器官中表达。实时 qPCR 分析显示，在两个小麦品种——冷敏感的“中国春（CS）”和冷耐受的“东农冬麦 1（D1）”——的四个不同组织中，许多 TaEXPs 的表达存在差异。我们的结果表明，TaEXPs 的差异表达可能与不同小麦品种的耐低温性或敏感性有关。我们的研究扩展了我们对小麦扩展蛋白的认识，并为扩展蛋白在植物发育和应激响应中的功能提供了新的见解。

https://cdn.ncbi.nlm.nih.gov/pmc/blobs/aeb5/5875846/319755d70196/pone.0195138.g006.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/aeb5/5875846/e91be2018f62/pone.0195138.g001.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/aeb5/5875846/abc769b90e6c/pone.0195138.g002.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/aeb5/5875846/3484c9b397de/pone.0195138.g004.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/aeb5/5875846/e570ddd9999a/pone.0195138.g005.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/aeb5/5875846/319755d70196/pone.0195138.g006.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/aeb5/5875846/e91be2018f62/pone.0195138.g001.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/aeb5/5875846/abc769b90e6c/pone.0195138.g002.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/aeb5/5875846/3484c9b397de/pone.0195138.g004.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/aeb5/5875846/e570ddd9999a/pone.0195138.g005.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/aeb5/5875846/319755d70196/pone.0195138.g006.jpg

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