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פותח על ידי קלירמאש פתרונות בע"מ -
Fruit load induces changes in global gene expression and in abscisic acid (ABA) and indole acetic acid (IAA) homeostasis in citrus buds
Year:
2014
Source of publication :
Journal of Experimental Botany
Authors :
דורון-פייגנבאום, עדי
;
.
צדקה, אבי
;
.
צור, נפתלי
;
.
שליזרמן, לודמילה
;
.
Volume :
65
Co-Authors:
Shalom, L., Department of Fruit Trees Sciences, Agricultural Research Organization, Volcani Center, Bet Dagan 50250, Israel, Robert H. Smith Faculty of Agriculture, Food and Environment, Hebrew University of Jerusalem, Rehovot, Israel
Samuels, S., Department of Fruit Trees Sciences, Agricultural Research Organization, Volcani Center, Bet Dagan 50250, Israel, Robert H. Smith Faculty of Agriculture, Food and Environment, Hebrew University of Jerusalem, Rehovot, Israel
Zur, N., Department of Fruit Trees Sciences, Agricultural Research Organization, Volcani Center, Bet Dagan 50250, Israel
Shlizerman, L., Department of Fruit Trees Sciences, Agricultural Research Organization, Volcani Center, Bet Dagan 50250, Israel
Doron-Faigenboim, A., Department of Fruit Trees Sciences, Agricultural Research Organization, Volcani Center, Bet Dagan 50250, Israel
Blumwald., E., Department of Plant Sciences, University of California, Davis, CA 95616, United States
Sadka, A., Department of Fruit Trees Sciences, Agricultural Research Organization, Volcani Center, Bet Dagan 50250, Israel
Facilitators :
From page:
3029
To page:
3044
(
Total pages:
16
)
Abstract:
Many fruit trees undergo cycles of heavy fruit load (ON-Crop) in one year, followed by low fruit load (OFF-Crop) the following year, a phenomenon known as alternate bearing (AB). The mechanism by which fruit load affects flowering induction during the following year (return bloom) is still unclear. Although not proven, it is commonly accepted that the fruit or an organ which senses fruit presence generates an inhibitory signal that moves into the bud and inhibits apical meristem transition. Indeed, fruit removal from ON-Crop trees (de-fruiting) induces return bloom. Identification of regulatory or metabolic processes modified in the bud in association with altered fruit load might shed light on the nature of the AB signalling process. The bud transcriptome of de-fruited citrus trees was compared with those of ONand OFF-Crop trees. Fruit removal resulted in relatively rapid changes in global gene expression, including induction of photosynthetic genes and proteins. Altered regulatory mechanisms included abscisic acid (ABA) metabolism and auxin polar transport. Genes of ABA biosynthesis were induced; however, hormone analyses showed that the ABA level was reduced in OFF-Crop buds and in buds shortly following fruit removal. Additionally, genes associated with Ca2+-dependent auxin polar transport were remarkably induced in buds of OFF-Crop and de-fruited trees. Hormone analyses showed that auxin levels were reduced in these buds as compared with ON-Crop buds. In view of the auxin transport autoinhibition theory, the possibility that auxin distribution plays a role in determining bud fate is discussed. © The Author 2014.
Note:
Related Files :
alternate bearing
flowering
Genetics
metabolism
Plant Genome
RT-PCR (Real-Time Polymerase Chain Reaction)
trees
עוד תגיות
תוכן קשור
More details
DOI :
10.1093/jxb/eru148
Article number:
Affiliations:
Database:
סקופוס
Publication Type:
מאמר
;
.
Language:
אנגלית
Editors' remarks:
ID:
31628
Last updated date:
02/03/2022 17:27
Creation date:
17/04/2018 01:04
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Scientific Publication
Fruit load induces changes in global gene expression and in abscisic acid (ABA) and indole acetic acid (IAA) homeostasis in citrus buds
65
Shalom, L., Department of Fruit Trees Sciences, Agricultural Research Organization, Volcani Center, Bet Dagan 50250, Israel, Robert H. Smith Faculty of Agriculture, Food and Environment, Hebrew University of Jerusalem, Rehovot, Israel
Samuels, S., Department of Fruit Trees Sciences, Agricultural Research Organization, Volcani Center, Bet Dagan 50250, Israel, Robert H. Smith Faculty of Agriculture, Food and Environment, Hebrew University of Jerusalem, Rehovot, Israel
Zur, N., Department of Fruit Trees Sciences, Agricultural Research Organization, Volcani Center, Bet Dagan 50250, Israel
Shlizerman, L., Department of Fruit Trees Sciences, Agricultural Research Organization, Volcani Center, Bet Dagan 50250, Israel
Doron-Faigenboim, A., Department of Fruit Trees Sciences, Agricultural Research Organization, Volcani Center, Bet Dagan 50250, Israel
Blumwald., E., Department of Plant Sciences, University of California, Davis, CA 95616, United States
Sadka, A., Department of Fruit Trees Sciences, Agricultural Research Organization, Volcani Center, Bet Dagan 50250, Israel
Fruit load induces changes in global gene expression and in abscisic acid (ABA) and indole acetic acid (IAA) homeostasis in citrus buds
Many fruit trees undergo cycles of heavy fruit load (ON-Crop) in one year, followed by low fruit load (OFF-Crop) the following year, a phenomenon known as alternate bearing (AB). The mechanism by which fruit load affects flowering induction during the following year (return bloom) is still unclear. Although not proven, it is commonly accepted that the fruit or an organ which senses fruit presence generates an inhibitory signal that moves into the bud and inhibits apical meristem transition. Indeed, fruit removal from ON-Crop trees (de-fruiting) induces return bloom. Identification of regulatory or metabolic processes modified in the bud in association with altered fruit load might shed light on the nature of the AB signalling process. The bud transcriptome of de-fruited citrus trees was compared with those of ONand OFF-Crop trees. Fruit removal resulted in relatively rapid changes in global gene expression, including induction of photosynthetic genes and proteins. Altered regulatory mechanisms included abscisic acid (ABA) metabolism and auxin polar transport. Genes of ABA biosynthesis were induced; however, hormone analyses showed that the ABA level was reduced in OFF-Crop buds and in buds shortly following fruit removal. Additionally, genes associated with Ca2+-dependent auxin polar transport were remarkably induced in buds of OFF-Crop and de-fruited trees. Hormone analyses showed that auxin levels were reduced in these buds as compared with ON-Crop buds. In view of the auxin transport autoinhibition theory, the possibility that auxin distribution plays a role in determining bud fate is discussed. © The Author 2014.
Scientific Publication
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