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פותח על ידי קלירמאש פתרונות בע"מ -
Transient induction of a subset of ethylene biosynthesis genes is potentially involved in regulation of grapevine bud dormancy release
Year:
2018
Source of publication :
Plant Molecular Biology
Authors :
אופיר, רון
;
.
אור, אתי
;
.
הללי, תמר
;
.
ויסברג, מירה
;
.
זנג, צ'ואנלין
;
.
שי, ג'אוואן
;
.
Volume :
98
Co-Authors:

Galbraith, D.W., School of Plant Sciences and Bio5 Institute, University of Arizona, Tucson, AZ  85721, United States; Pang, X., College of Life Sciences, South China Agricultural University, Guangzhou, 510642, China

Facilitators :
From page:
507
To page:
523
(
Total pages:
17
)
Abstract:

Key message: Transient increases in ethylene biosynthesis, achieved by tight regulation of transcription of specific ACC oxidase and ACC synthase genes, play a role in activation of grapevine bud dormancy release. Abstract: The molecular mechanisms regulating dormancy release in grapevine buds are as yet unclear. It has been hypothesized that its core involves perturbation of respiration which induces an interplay between ethylene and ABA metabolism that removes repression and allows regrowth. Roles for hypoxia and ABA metabolism in this process have been previously supported. The potential involvement of ethylene biosynthesis in regulation of dormancy release, which has received little attention so far, is now explored. Our results indicate that (1) ethylene biosynthesis is induced by hydrogen cyanamide (HC) and azide (AZ), known artificial stimuli of dormancy release, (2) inhibitors of ethylene biosynthesis and signalling antagonize dormancy release by HC/AZ treatments, (3) ethylene application induces dormancy release, (4) there are two sets of bud-expressed ethylene biosynthesis genes which are differentially regulated, (5) only one set is transiently upregulated by HC/AZ and during the natural dormancy cycle, concomitant with changes in ethylene levels, and (6) levels of ACC oxidase transcripts and ethylene sharply decrease during natural dormancy release, whereas ACC accumulates. Given these results, we propose that transient increases in ethylene biosynthesis prior to dormancy release, achieved primarily by regulation of transcription of specific ACC oxidase genes, play a role in activation of dormancy release. © 2018, Springer Nature B.V.

Note:
Related Files :
ACC oxidase (ACO)
ACC synthase
bud
dormancy
ethylene
Grapevine
Vitis vinifera
עוד תגיות
תוכן קשור
More details
DOI :
10.1007/s11103-018-0793-y
Article number:
0
Affiliations:
Database:
סקופוס
Publication Type:
מאמר
;
.
Language:
אנגלית
Editors' remarks:
ID:
38122
Last updated date:
02/03/2022 17:27
Creation date:
21/11/2018 12:27
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Scientific Publication
Transient induction of a subset of ethylene biosynthesis genes is potentially involved in regulation of grapevine bud dormancy release
98

Galbraith, D.W., School of Plant Sciences and Bio5 Institute, University of Arizona, Tucson, AZ  85721, United States; Pang, X., College of Life Sciences, South China Agricultural University, Guangzhou, 510642, China

Transient induction of a subset of ethylene biosynthesis genes is potentially involved in regulation of grapevine bud dormancy release

Key message: Transient increases in ethylene biosynthesis, achieved by tight regulation of transcription of specific ACC oxidase and ACC synthase genes, play a role in activation of grapevine bud dormancy release. Abstract: The molecular mechanisms regulating dormancy release in grapevine buds are as yet unclear. It has been hypothesized that its core involves perturbation of respiration which induces an interplay between ethylene and ABA metabolism that removes repression and allows regrowth. Roles for hypoxia and ABA metabolism in this process have been previously supported. The potential involvement of ethylene biosynthesis in regulation of dormancy release, which has received little attention so far, is now explored. Our results indicate that (1) ethylene biosynthesis is induced by hydrogen cyanamide (HC) and azide (AZ), known artificial stimuli of dormancy release, (2) inhibitors of ethylene biosynthesis and signalling antagonize dormancy release by HC/AZ treatments, (3) ethylene application induces dormancy release, (4) there are two sets of bud-expressed ethylene biosynthesis genes which are differentially regulated, (5) only one set is transiently upregulated by HC/AZ and during the natural dormancy cycle, concomitant with changes in ethylene levels, and (6) levels of ACC oxidase transcripts and ethylene sharply decrease during natural dormancy release, whereas ACC accumulates. Given these results, we propose that transient increases in ethylene biosynthesis prior to dormancy release, achieved primarily by regulation of transcription of specific ACC oxidase genes, play a role in activation of dormancy release. © 2018, Springer Nature B.V.

Scientific Publication
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