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Suppression of LX ribonuclease in tomato results in a delay of leaf senescence and abscission
Year:
2006
Source of publication :
Plant physiology (source)
Authors :
Burd, Shaul
;
.
Lers, Amnon
;
.
Sonego, Lilian
;
.
Volume :
142
Co-Authors:
Lers, A., Department of Postharvest Science of Fresh Produce, Agricultural Research Organization, Volcani Center, Bet Dagan 50250, Israel
Sonego, L., Department of Postharvest Science of Fresh Produce, Agricultural Research Organization, Volcani Center, Bet Dagan 50250, Israel
Green, P.J., Delaware Biotechnology Institute, University of Delaware, Newark, DE 19711, United States
Burd, S., Department of Postharvest Science of Fresh Produce, Agricultural Research Organization, Volcani Center, Bet Dagan 50250, Israel
Facilitators :
From page:
710
To page:
721
(
Total pages:
12
)
Abstract:
Although present in different organisms and conserved in their protein sequence, the biological functions of T2 ribonucleases (RNase) are generally unknown. Tomato (Lycopersicon esculentum) LX is a T2/S-like RNase and its expression is known to be associated with phosphate starvation, ethylene responses, and senescence and programmed cell death. In this study, LX function was investigated using antisense tomato plants in which the LX protein level was reduced. LX protein levels normally become elevated when leaves senesce and antisense inhibition of LX retarded the progression of senescence. Moreover, we observed a marked delay of leaf abscission in LX-deficient plants. This correlated with specific induction of LX protein in the tomato mature abscission zone tissue. LX RNase gene regulation and the consequences of antisense inhibition indicate that LX has an important functional role in both abscission and senescence. © 2006 American Society of Plant Biologists.
Note:
Related Files :
abscission
Cotyledon
enzymes
ethylene
Fruits
Gene regulation
Genetics
metabolism
Show More
Related Content
More details
DOI :
10.1104/pp.106.080135
Article number:
Affiliations:
Database:
Scopus
Publication Type:
article
;
.
Language:
English
Editors' remarks:
ID:
28794
Last updated date:
02/03/2022 17:27
Creation date:
17/04/2018 00:41
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Scientific Publication
Suppression of LX ribonuclease in tomato results in a delay of leaf senescence and abscission
142
Lers, A., Department of Postharvest Science of Fresh Produce, Agricultural Research Organization, Volcani Center, Bet Dagan 50250, Israel
Sonego, L., Department of Postharvest Science of Fresh Produce, Agricultural Research Organization, Volcani Center, Bet Dagan 50250, Israel
Green, P.J., Delaware Biotechnology Institute, University of Delaware, Newark, DE 19711, United States
Burd, S., Department of Postharvest Science of Fresh Produce, Agricultural Research Organization, Volcani Center, Bet Dagan 50250, Israel
Suppression of LX ribonuclease in tomato results in a delay of leaf senescence and abscission
Although present in different organisms and conserved in their protein sequence, the biological functions of T2 ribonucleases (RNase) are generally unknown. Tomato (Lycopersicon esculentum) LX is a T2/S-like RNase and its expression is known to be associated with phosphate starvation, ethylene responses, and senescence and programmed cell death. In this study, LX function was investigated using antisense tomato plants in which the LX protein level was reduced. LX protein levels normally become elevated when leaves senesce and antisense inhibition of LX retarded the progression of senescence. Moreover, we observed a marked delay of leaf abscission in LX-deficient plants. This correlated with specific induction of LX protein in the tomato mature abscission zone tissue. LX RNase gene regulation and the consequences of antisense inhibition indicate that LX has an important functional role in both abscission and senescence. © 2006 American Society of Plant Biologists.
Scientific Publication
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