miRNA control of vegetative phase change in trees.

After germination, plants enter juvenile vegetative phase and then transition to an adult vegetative phase before producing reproductive structures. The character and timing of the juvenile-to-adult transition vary widely between species. In annual plants, this transition occurs soon after germinati...

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Main Authors: Jia-Wei Wang, Mee Yeon Park, Ling-Jian Wang, Yeonjong Koo, Xiao-Ya Chen, Detlef Weigel, R Scott Poethig
Format: Article
Language:English
Published: Public Library of Science (PLoS) 2011-02-01
Series:PLoS Genetics
Online Access:https://journals.plos.org/plosgenetics/article/file?id=10.1371/journal.pgen.1002012&type=printable
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author Jia-Wei Wang
Mee Yeon Park
Ling-Jian Wang
Yeonjong Koo
Xiao-Ya Chen
Detlef Weigel
R Scott Poethig
author_facet Jia-Wei Wang
Mee Yeon Park
Ling-Jian Wang
Yeonjong Koo
Xiao-Ya Chen
Detlef Weigel
R Scott Poethig
author_sort Jia-Wei Wang
collection DOAJ
description After germination, plants enter juvenile vegetative phase and then transition to an adult vegetative phase before producing reproductive structures. The character and timing of the juvenile-to-adult transition vary widely between species. In annual plants, this transition occurs soon after germination and usually involves relatively minor morphological changes, whereas in trees and other perennial woody plants it occurs after months or years and can involve major changes in shoot architecture. Whether this transition is controlled by the same mechanism in annual and perennial plants is unknown. In the annual forb Arabidopsis thaliana and in maize (Zea mays), vegetative phase change is controlled by the sequential activity of microRNAs miR156 and miR172. miR156 is highly abundant in seedlings and decreases during the juvenile-to-adult transition, while miR172 has an opposite expression pattern. We observed similar changes in the expression of these genes in woody species with highly differentiated, well-characterized juvenile and adult phases (Acacia confusa, Acacia colei, Eucalyptus globulus, Hedera helix, Quercus acutissima), as well as in the tree Populus x canadensis, where vegetative phase change is marked by relatively minor changes in leaf morphology and internode length. Overexpression of miR156 in transgenic P. x canadensis reduced the expression of miR156-targeted SPL genes and miR172, and it drastically prolonged the juvenile phase. Our results indicate that miR156 is an evolutionarily conserved regulator of vegetative phase change in both annual herbaceous plants and perennial trees.
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spelling doaj-art-a1234330f40941a1b2e7b0b0c4a43a0e2025-08-20T03:10:22ZengPublic Library of Science (PLoS)PLoS Genetics1553-73901553-74042011-02-0172e100201210.1371/journal.pgen.1002012miRNA control of vegetative phase change in trees.Jia-Wei WangMee Yeon ParkLing-Jian WangYeonjong KooXiao-Ya ChenDetlef WeigelR Scott PoethigAfter germination, plants enter juvenile vegetative phase and then transition to an adult vegetative phase before producing reproductive structures. The character and timing of the juvenile-to-adult transition vary widely between species. In annual plants, this transition occurs soon after germination and usually involves relatively minor morphological changes, whereas in trees and other perennial woody plants it occurs after months or years and can involve major changes in shoot architecture. Whether this transition is controlled by the same mechanism in annual and perennial plants is unknown. In the annual forb Arabidopsis thaliana and in maize (Zea mays), vegetative phase change is controlled by the sequential activity of microRNAs miR156 and miR172. miR156 is highly abundant in seedlings and decreases during the juvenile-to-adult transition, while miR172 has an opposite expression pattern. We observed similar changes in the expression of these genes in woody species with highly differentiated, well-characterized juvenile and adult phases (Acacia confusa, Acacia colei, Eucalyptus globulus, Hedera helix, Quercus acutissima), as well as in the tree Populus x canadensis, where vegetative phase change is marked by relatively minor changes in leaf morphology and internode length. Overexpression of miR156 in transgenic P. x canadensis reduced the expression of miR156-targeted SPL genes and miR172, and it drastically prolonged the juvenile phase. Our results indicate that miR156 is an evolutionarily conserved regulator of vegetative phase change in both annual herbaceous plants and perennial trees.https://journals.plos.org/plosgenetics/article/file?id=10.1371/journal.pgen.1002012&type=printable
spellingShingle Jia-Wei Wang
Mee Yeon Park
Ling-Jian Wang
Yeonjong Koo
Xiao-Ya Chen
Detlef Weigel
R Scott Poethig
miRNA control of vegetative phase change in trees.
PLoS Genetics
title miRNA control of vegetative phase change in trees.
title_full miRNA control of vegetative phase change in trees.
title_fullStr miRNA control of vegetative phase change in trees.
title_full_unstemmed miRNA control of vegetative phase change in trees.
title_short miRNA control of vegetative phase change in trees.
title_sort mirna control of vegetative phase change in trees
url https://journals.plos.org/plosgenetics/article/file?id=10.1371/journal.pgen.1002012&type=printable
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AT yeonjongkoo mirnacontrolofvegetativephasechangeintrees
AT xiaoyachen mirnacontrolofvegetativephasechangeintrees
AT detlefweigel mirnacontrolofvegetativephasechangeintrees
AT rscottpoethig mirnacontrolofvegetativephasechangeintrees