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A tomato strigolactone-impaired mutant displays aberrant shoot morphology and plant interactions
Year:
2010
Source of publication :
Journal of Experimental Botany
Authors :
Bhattacharya, Chaitali
;
.
Dor, Evgenia
;
.
Hershenhorn, Joseph
;
.
Joel, Daniel M.
;
.
Kapulnik, Yoram
;
.
Koltai, Hinanit
;
.
Lekalla, Sivarama
;
.
Mayzlish-Gati, Einav
;
.
Resnick, Nathalie
;
.
Wininger, Smadar
;
.
Volume :
61
Co-Authors:
Koltai, H., Institute of Plant Sciences, Agricultural Research Organization (ARO), Volcani Center, PO Box 6, Bet Dagan 50250, Israel
Lekkala, S.P., Institute of Plant Sciences, Agricultural Research Organization (ARO), Volcani Center, PO Box 6, Bet Dagan 50250, Israel
Bhattacharya, C., Institute of Plant Sciences, Agricultural Research Organization (ARO), Volcani Center, PO Box 6, Bet Dagan 50250, Israel
Mayzlish-Gati, E., Institute of Plant Sciences, Agricultural Research Organization (ARO), Volcani Center, PO Box 6, Bet Dagan 50250, Israel
Resnick, N., Institute of Plant Sciences, Agricultural Research Organization (ARO), Volcani Center, PO Box 6, Bet Dagan 50250, Israel
Wininger, S., Institute of Plant Sciences, Agricultural Research Organization (ARO), Volcani Center, PO Box 6, Bet Dagan 50250, Israel
Dor, E., Department of Phytopathology and Weed Research, Newe-ya'Ar Research Center, PO Box 1021, Ramat-Yishay, Israel
Yoneyama, K., Weed Science Center, Utsunomiya University, 350 Mine-machi, Utsunomiya, Japan
Hershenhorn, J., Department of Phytopathology and Weed Research, Newe-ya'Ar Research Center, PO Box 1021, Ramat-Yishay, Israel
Joel, D.M., Department of Phytopathology and Weed Research, Newe-ya'Ar Research Center, PO Box 1021, Ramat-Yishay, Israel
Kapulnik, Y., Institute of Plant Sciences, Agricultural Research Organization (ARO), Volcani Center, PO Box 6, Bet Dagan 50250, Israel
Facilitators :
From page:
1739
To page:
1749
(
Total pages:
11
)
Abstract:
Strigolactones are considered a new group of plant hormones. Their role as modulators of plant growth and signalling molecules for plant interactions first became evident in Arabidopsis, pea, and rice mutants that were flawed in strigolactone production, release, or perception. The first evidence in tomato (Solanum lycopersicon) of strigolactone deficiency is presented here. Sl-ORT1, previously identified as resistant to the parasitic plant Orobanche, had lower levels of arbuscular mycorrhizal fungus (Glomus intraradices) colonization, possibly as a result of its reduced ability to induce mycorrhizal hyphal branching. Biochemical analysis of mutant root extracts suggested that it produces only minute amounts of two of the tomato strigolactones: solanacol and didehydro-orobanchol. Accordingly, the transcription level of a key enzyme (CCD7) putatively involved in strigolactone synthesis in tomato was reduced in Sl-ORT1 compared with the wild type (WT). Sl-ORT1 shoots exhibited increased lateral shoot branching, whereas exogenous application of the synthetic strigolactone GR24 to the mutant restored the WT phenotype by reducing the number of lateral branches. Reduced lateral shoot branching was also evident in grafted plants which included a WT interstock, which was grafted between the mutant rootstock and the scion. In roots of these grafted plants, the CCD7 transcription level was not significantly induced, nor was mycorrhizal sensitivity restored. Hence, WT-interstock grafting, which restores mutant shoot morphology to WT, does not restore mutant root properties to WT. Characterization of the first tomato strigolactone-deficient mutant supports the putative general role of strigolactones as messengers of suppression of lateral shoot branching in a diversity of plant species. © 2010 The Author(s).
Note:
Related Files :
arabidopsis
fungi
Genetics
Growth, Development and Aging
metabolism
Mycorrhiza
Orobanche
Pisum sativum
Solanum
Show More
Related Content
More details
DOI :
10.1093/jxb/erq041
Article number:
0
Affiliations:
Database:
Scopus
Publication Type:
article
;
.
Language:
English
Editors' remarks:
ID:
20049
Last updated date:
02/03/2022 17:27
Creation date:
16/04/2018 23:33
Scientific Publication
A tomato strigolactone-impaired mutant displays aberrant shoot morphology and plant interactions
61
Koltai, H., Institute of Plant Sciences, Agricultural Research Organization (ARO), Volcani Center, PO Box 6, Bet Dagan 50250, Israel
Lekkala, S.P., Institute of Plant Sciences, Agricultural Research Organization (ARO), Volcani Center, PO Box 6, Bet Dagan 50250, Israel
Bhattacharya, C., Institute of Plant Sciences, Agricultural Research Organization (ARO), Volcani Center, PO Box 6, Bet Dagan 50250, Israel
Mayzlish-Gati, E., Institute of Plant Sciences, Agricultural Research Organization (ARO), Volcani Center, PO Box 6, Bet Dagan 50250, Israel
Resnick, N., Institute of Plant Sciences, Agricultural Research Organization (ARO), Volcani Center, PO Box 6, Bet Dagan 50250, Israel
Wininger, S., Institute of Plant Sciences, Agricultural Research Organization (ARO), Volcani Center, PO Box 6, Bet Dagan 50250, Israel
Dor, E., Department of Phytopathology and Weed Research, Newe-ya'Ar Research Center, PO Box 1021, Ramat-Yishay, Israel
Yoneyama, K., Weed Science Center, Utsunomiya University, 350 Mine-machi, Utsunomiya, Japan
Hershenhorn, J., Department of Phytopathology and Weed Research, Newe-ya'Ar Research Center, PO Box 1021, Ramat-Yishay, Israel
Joel, D.M., Department of Phytopathology and Weed Research, Newe-ya'Ar Research Center, PO Box 1021, Ramat-Yishay, Israel
Kapulnik, Y., Institute of Plant Sciences, Agricultural Research Organization (ARO), Volcani Center, PO Box 6, Bet Dagan 50250, Israel
A tomato strigolactone-impaired mutant displays aberrant shoot morphology and plant interactions
Strigolactones are considered a new group of plant hormones. Their role as modulators of plant growth and signalling molecules for plant interactions first became evident in Arabidopsis, pea, and rice mutants that were flawed in strigolactone production, release, or perception. The first evidence in tomato (Solanum lycopersicon) of strigolactone deficiency is presented here. Sl-ORT1, previously identified as resistant to the parasitic plant Orobanche, had lower levels of arbuscular mycorrhizal fungus (Glomus intraradices) colonization, possibly as a result of its reduced ability to induce mycorrhizal hyphal branching. Biochemical analysis of mutant root extracts suggested that it produces only minute amounts of two of the tomato strigolactones: solanacol and didehydro-orobanchol. Accordingly, the transcription level of a key enzyme (CCD7) putatively involved in strigolactone synthesis in tomato was reduced in Sl-ORT1 compared with the wild type (WT). Sl-ORT1 shoots exhibited increased lateral shoot branching, whereas exogenous application of the synthetic strigolactone GR24 to the mutant restored the WT phenotype by reducing the number of lateral branches. Reduced lateral shoot branching was also evident in grafted plants which included a WT interstock, which was grafted between the mutant rootstock and the scion. In roots of these grafted plants, the CCD7 transcription level was not significantly induced, nor was mycorrhizal sensitivity restored. Hence, WT-interstock grafting, which restores mutant shoot morphology to WT, does not restore mutant root properties to WT. Characterization of the first tomato strigolactone-deficient mutant supports the putative general role of strigolactones as messengers of suppression of lateral shoot branching in a diversity of plant species. © 2010 The Author(s).
Scientific Publication
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