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Induction of defense response against Alternaria rot in Zaosu pear fruit by exogenous L-lysine through regulating ROS metabolism and activating defense-related proteins
Year:
2021
Source of publication :
Postharvest Biology and Technology
Authors :
פרוסקי, דב
;
.
Volume :
Co-Authors:

Yongxiang Liu
Yongcai Li
Yang Bi
Qianqian Jiang
Renyan Mao
Zhitian Liu
Yi Huang
Miao Zhang
Dov B. Prusky

Facilitators :
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Total pages:
1
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Abstract:

L-lysine, an important basic amino acid, its catabolic pathway is activated upon microbial pathogen attack in plants and has a central role in plant immunity. The control effects of exogenous L-lysine treatment on Alternaria rot in postharvest ‘Zaosu’ pear fruit and possible mechanisms involved were studied. The results showed that L-lysine treatment inhibited Alternaria rot development and the effect was negatively correlated with the treatment concentration, lesion diameter of 0.1 mM L-lysine treated fruit was 43.7 % lower than that of the control 15 d after treatment. Further studies showed that L-lysine treatment significantly suppressed O2, H2O2, Malondialdehyde (MDA) content, and enhanced catalase (CAT), peroxidase (POD), and superoxide dismutase (SOD) activities and gene expression in pear fruit. β-1,3-glucanase (GLU), and chitinase (CHI) activities and PbrGLUPbrCHI, and PbrPR-1 gene expression were also induced by exogenous L-lysine. The findings suggest that postharvest L-lysine treatment effectively enhanced disease resistance through inhibiting reactive oxygen species (ROS) production and activating defense-related protein in pear fruit.

Note:
Related Files :
Alternaria alternata
Induce disease resistance
L-lysine
pear fruit
Reactive oxygen species (ROS)
עוד תגיות
תוכן קשור
More details
DOI :
10.1016/j.postharvbio.2021.111567
Article number:
111567
Affiliations:
Database:
סקופוס
Publication Type:
מאמר
;
.
Language:
אנגלית
Editors' remarks:
ID:
55106
Last updated date:
02/03/2022 17:27
Creation date:
24/05/2021 14:14
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Scientific Publication
Induction of defense response against Alternaria rot in Zaosu pear fruit by exogenous L-lysine through regulating ROS metabolism and activating defense-related proteins

Yongxiang Liu
Yongcai Li
Yang Bi
Qianqian Jiang
Renyan Mao
Zhitian Liu
Yi Huang
Miao Zhang
Dov B. Prusky

Induction of defense response against Alternaria rot in Zaosu pear fruit by exogenous L-lysine through regulating ROS metabolism and activating defense-related proteins

L-lysine, an important basic amino acid, its catabolic pathway is activated upon microbial pathogen attack in plants and has a central role in plant immunity. The control effects of exogenous L-lysine treatment on Alternaria rot in postharvest ‘Zaosu’ pear fruit and possible mechanisms involved were studied. The results showed that L-lysine treatment inhibited Alternaria rot development and the effect was negatively correlated with the treatment concentration, lesion diameter of 0.1 mM L-lysine treated fruit was 43.7 % lower than that of the control 15 d after treatment. Further studies showed that L-lysine treatment significantly suppressed O2, H2O2, Malondialdehyde (MDA) content, and enhanced catalase (CAT), peroxidase (POD), and superoxide dismutase (SOD) activities and gene expression in pear fruit. β-1,3-glucanase (GLU), and chitinase (CHI) activities and PbrGLUPbrCHI, and PbrPR-1 gene expression were also induced by exogenous L-lysine. The findings suggest that postharvest L-lysine treatment effectively enhanced disease resistance through inhibiting reactive oxygen species (ROS) production and activating defense-related protein in pear fruit.

Scientific Publication
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