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Evolutionary history and stress regulation of the lectin superfamily in higher plants

BACKGROUND: Lectins are a class of carbohydrate-binding proteins. They play roles in various biological processes. However, little is known about their evolutionary history and their functions in plant stress regulation. The availability of full genome sequences from various plant species makes it p...

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Autores principales: Jiang, Shu-Ye, Ma, Zhigang, Ramachandran, Srinivasan
Formato: Texto
Lenguaje:English
Publicado: BioMed Central 2010
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC2846932/
https://www.ncbi.nlm.nih.gov/pubmed/20236552
http://dx.doi.org/10.1186/1471-2148-10-79
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author Jiang, Shu-Ye
Ma, Zhigang
Ramachandran, Srinivasan
author_facet Jiang, Shu-Ye
Ma, Zhigang
Ramachandran, Srinivasan
author_sort Jiang, Shu-Ye
collection PubMed
description BACKGROUND: Lectins are a class of carbohydrate-binding proteins. They play roles in various biological processes. However, little is known about their evolutionary history and their functions in plant stress regulation. The availability of full genome sequences from various plant species makes it possible to perform a whole-genome exploration for further understanding their biological functions. RESULTS: Higher plant genomes encode large numbers of lectin proteins. Based on their domain structures and phylogenetic analyses, a new classification system has been proposed. In this system, 12 different families have been classified and four of them consist of recently identified plant lectin members. Further analyses show that some of lectin families exhibit species-specific expansion and rapid birth-and-death evolution. Tandem and segmental duplications have been regarded as the major mechanisms to drive lectin expansion although retrogenes also significantly contributed to the birth of new lectin genes in soybean and rice. Evidence shows that lectin genes have been involved in biotic/abiotic stress regulations and tandem/segmental duplications may be regarded as drivers for plants to adapt various environmental stresses through duplication followed by expression divergence. Each member of this gene superfamily may play specialized roles in a specific stress condition and function as a regulator of various environmental factors such as cold, drought and high salinity as well as biotic stresses. CONCLUSIONS: Our studies provide a new outline of the plant lectin gene superfamily and advance the understanding of plant lectin genes in lineage-specific expansion and their functions in biotic/abiotic stress-related developmental processes.
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spelling pubmed-28469322010-03-30 Evolutionary history and stress regulation of the lectin superfamily in higher plants Jiang, Shu-Ye Ma, Zhigang Ramachandran, Srinivasan BMC Evol Biol Research article BACKGROUND: Lectins are a class of carbohydrate-binding proteins. They play roles in various biological processes. However, little is known about their evolutionary history and their functions in plant stress regulation. The availability of full genome sequences from various plant species makes it possible to perform a whole-genome exploration for further understanding their biological functions. RESULTS: Higher plant genomes encode large numbers of lectin proteins. Based on their domain structures and phylogenetic analyses, a new classification system has been proposed. In this system, 12 different families have been classified and four of them consist of recently identified plant lectin members. Further analyses show that some of lectin families exhibit species-specific expansion and rapid birth-and-death evolution. Tandem and segmental duplications have been regarded as the major mechanisms to drive lectin expansion although retrogenes also significantly contributed to the birth of new lectin genes in soybean and rice. Evidence shows that lectin genes have been involved in biotic/abiotic stress regulations and tandem/segmental duplications may be regarded as drivers for plants to adapt various environmental stresses through duplication followed by expression divergence. Each member of this gene superfamily may play specialized roles in a specific stress condition and function as a regulator of various environmental factors such as cold, drought and high salinity as well as biotic stresses. CONCLUSIONS: Our studies provide a new outline of the plant lectin gene superfamily and advance the understanding of plant lectin genes in lineage-specific expansion and their functions in biotic/abiotic stress-related developmental processes. BioMed Central 2010-03-18 /pmc/articles/PMC2846932/ /pubmed/20236552 http://dx.doi.org/10.1186/1471-2148-10-79 Text en Copyright ©2010 Jiang et al; licensee BioMed Central Ltd. http://creativecommons.org/licenses/by/2.0 This is an Open Access article distributed under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/by/2.0), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
spellingShingle Research article
Jiang, Shu-Ye
Ma, Zhigang
Ramachandran, Srinivasan
Evolutionary history and stress regulation of the lectin superfamily in higher plants
title Evolutionary history and stress regulation of the lectin superfamily in higher plants
title_full Evolutionary history and stress regulation of the lectin superfamily in higher plants
title_fullStr Evolutionary history and stress regulation of the lectin superfamily in higher plants
title_full_unstemmed Evolutionary history and stress regulation of the lectin superfamily in higher plants
title_short Evolutionary history and stress regulation of the lectin superfamily in higher plants
title_sort evolutionary history and stress regulation of the lectin superfamily in higher plants
topic Research article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC2846932/
https://www.ncbi.nlm.nih.gov/pubmed/20236552
http://dx.doi.org/10.1186/1471-2148-10-79
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