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פותח על ידי קלירמאש פתרונות בע"מ -
Strigolactone signaling in the endodermis is sufficient to restore root responses and involves SHORT HYPOCOTYL 2 (SHY2) activity
Year:
2013
Source of publication :
New Phytologist
Authors :
בלאוסוב, אדוארד
;
.
וינינגר, סמדר
;
.
מייזליש-גתי, עינב
;
.
קולטאי, חננית
;
.
קורן, דקלה
;
.
קפולניק, יורם
;
.
רזניק, נטליה
;
.
Volume :
198
Co-Authors:
Koren, D., Institute of Plant Sciences, Agricultural Research Organization (ARO), The Volcani Center, PO Box 6, Bet Dagan, 50250, Israel
Resnick, N., Institute of Plant Sciences, Agricultural Research Organization (ARO), The Volcani Center, PO Box 6, Bet Dagan, 50250, Israel
Gati, E.M., Institute of Plant Sciences, Agricultural Research Organization (ARO), The Volcani Center, PO Box 6, Bet Dagan, 50250, Israel
Belausov, E., Institute of Plant Sciences, Agricultural Research Organization (ARO), The Volcani Center, PO Box 6, Bet Dagan, 50250, Israel
Weininger, S., Institute of Plant Sciences, Agricultural Research Organization (ARO), The Volcani Center, PO Box 6, Bet Dagan, 50250, Israel
Kapulnik, Y., Institute of Plant Sciences, Agricultural Research Organization (ARO), The Volcani Center, PO Box 6, Bet Dagan, 50250, Israel
Koltai, H., Institute of Plant Sciences, Agricultural Research Organization (ARO), The Volcani Center, PO Box 6, Bet Dagan, 50250, Israel
Facilitators :
From page:
866
To page:
874
(
Total pages:
9
)
Abstract:
Strigolactones (SLs) are plant hormones and regulators of root development, including lateral root (LR) formation, root hair (RH) elongation and meristem cell number, in a MORE AXILLARY GROWTH 2 (MAX2)-dependent way. However, whether SL signaling is acting cell-autonomously or in a non-cell-autonomous way in roots is unclear. We analyzed root phenotype, hormonal responses and gene expression in multiple lines of Arabidopsis thaliana max2-1 mutants expressing MAX2 under various tissue-specific promoters and shy2 mutants. The results demonstrate for the first time that expression of MAX2 under the SCARECROW (SCR) promoter, expressed mainly in the root endodermis, is sufficient to confer SL sensitivity in the root for RH, LR and meristem cell number. Moreover, loss of function mutation of SHORT HYPOCOTYL 2 (SHY2), a key component in auxin and cytokinin regulation of meristem size, has been found to be insensitive to SLs in relation to LR formation and meristem cell number. Endodermal SL signaling, mediated by MAX2, is sufficient to confer SL sensitivity in root, and SHY2 may participate in SL signaling to regulate meristem size and LR formation. These SL signaling pathways thus may act through modulation of auxin flux in the root tip, and may indicate a root-specific, yet non-cell-autonomous regulatory mode of action. © 2013 New Phytologist Trust.
Note:
Related Files :
arabidopsis
Arabidopsis thaliana
cytokinins
gene expression
Genetics
metabolism
mutation
Root hair
עוד תגיות
תוכן קשור
More details
DOI :
10.1111/nph.12189
Article number:
0
Affiliations:
Database:
סקופוס
Publication Type:
מאמר
;
.
Language:
אנגלית
Editors' remarks:
ID:
30937
Last updated date:
02/03/2022 17:27
Creation date:
17/04/2018 00:58
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Scientific Publication
Strigolactone signaling in the endodermis is sufficient to restore root responses and involves SHORT HYPOCOTYL 2 (SHY2) activity
198
Koren, D., Institute of Plant Sciences, Agricultural Research Organization (ARO), The Volcani Center, PO Box 6, Bet Dagan, 50250, Israel
Resnick, N., Institute of Plant Sciences, Agricultural Research Organization (ARO), The Volcani Center, PO Box 6, Bet Dagan, 50250, Israel
Gati, E.M., Institute of Plant Sciences, Agricultural Research Organization (ARO), The Volcani Center, PO Box 6, Bet Dagan, 50250, Israel
Belausov, E., Institute of Plant Sciences, Agricultural Research Organization (ARO), The Volcani Center, PO Box 6, Bet Dagan, 50250, Israel
Weininger, S., Institute of Plant Sciences, Agricultural Research Organization (ARO), The Volcani Center, PO Box 6, Bet Dagan, 50250, Israel
Kapulnik, Y., Institute of Plant Sciences, Agricultural Research Organization (ARO), The Volcani Center, PO Box 6, Bet Dagan, 50250, Israel
Koltai, H., Institute of Plant Sciences, Agricultural Research Organization (ARO), The Volcani Center, PO Box 6, Bet Dagan, 50250, Israel
Strigolactone signaling in the endodermis is sufficient to restore root responses and involves SHORT HYPOCOTYL 2 (SHY2) activity
Strigolactones (SLs) are plant hormones and regulators of root development, including lateral root (LR) formation, root hair (RH) elongation and meristem cell number, in a MORE AXILLARY GROWTH 2 (MAX2)-dependent way. However, whether SL signaling is acting cell-autonomously or in a non-cell-autonomous way in roots is unclear. We analyzed root phenotype, hormonal responses and gene expression in multiple lines of Arabidopsis thaliana max2-1 mutants expressing MAX2 under various tissue-specific promoters and shy2 mutants. The results demonstrate for the first time that expression of MAX2 under the SCARECROW (SCR) promoter, expressed mainly in the root endodermis, is sufficient to confer SL sensitivity in the root for RH, LR and meristem cell number. Moreover, loss of function mutation of SHORT HYPOCOTYL 2 (SHY2), a key component in auxin and cytokinin regulation of meristem size, has been found to be insensitive to SLs in relation to LR formation and meristem cell number. Endodermal SL signaling, mediated by MAX2, is sufficient to confer SL sensitivity in root, and SHY2 may participate in SL signaling to regulate meristem size and LR formation. These SL signaling pathways thus may act through modulation of auxin flux in the root tip, and may indicate a root-specific, yet non-cell-autonomous regulatory mode of action. © 2013 New Phytologist Trust.
Scientific Publication
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