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Sodium hydrosulfide priming improves the response of photosynthesis to overnight frost and day high‐light in avocado (Persea americana Mill, cv. ‘Hass’)
Year:
2019
Source of publication :
Physiologia Plantarum
Authors :
Charuvi, Dana
;
.
Irihimovitch, Vered
;
.
Joshi, Janak Raj
;
.
Kamara, Itzhak
;
.
Ratner, Kira
;
.
Yadav, Deepanker
;
.
Volume :
Co-Authors:

Elinor Aviv‐Sharon  -The Robert H. Smith Institute of Plant Sciences and Genetics in Agriculture, Hebrew University of Jerusalem, Rehovot, Israel. Department of Biomolecular Sciences, Weizmann Institute of Science, Rehovot, Israel

Facilitators :
From page:
0
To page:
0
(
Total pages:
1
)
Abstract:

Radiation frost events, which have become more common in the Mediterranean Basin in recent years, inflict extensive damage to tropical/subtropical fruit crops. During radiation frost, sub-zero temperatures are encountered in the dark, followed by high light during the subsequent clear-sky day. One of the key processes affected by these conditions is photosynthesis, which, when significantly inhibited, leads to the enhanced accumulation of reactive oxygen species (ROS) and damage. The use of ‘chemical priming’ treatments that induce plants’ endogenous stress responses, is a possible strategy to improve their coping with stress conditions. Herein, we studied the effects of priming with sodium hydrosulfide (NaHS), a donor of hydrogen sulfide (H2S), on the response of photosynthesis to overnight frost and day high-light conditions in ‘Hass’ avocado (Persea americana Mill). We found that priming with a single foliar application of NaHS had positive effects on the response of grafted ‘Hass’ plants. Primed plants exhibited significantly reduced inhibition of CO2 assimilation, a lower accumulation of hydrogen peroxide as well as lower photoinhibition, as compared to untreated plants. The ability to maintain a high CO2 assimilation capacity after the frost was attained on the background of considerable inhibition in stomatal conductance. Thus, it was likely related to the lower accumulation of ROS and photo-damage observed in primed ‘Hass’ plants. This work contributes toward the understanding of the response of photosynthesis in a subtropical crop species to frost conditions and provides a prospect for chemical priming as a potential practice in orchards during cold winters

Note:
Related Files :
Avocado
Day-time
Day lightings
frost
Persea americana Mill
photosynthesis
sodium
tropical and subtropical fruits
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Related Content
More details
DOI :
https://doi.org/10.1111/ppl.13023
Article number:
0
Affiliations:
Database:
PubMed
Publication Type:
article
;
.
Language:
English
Editors' remarks:
ID:
43858
Last updated date:
02/03/2022 17:27
Creation date:
11/09/2019 15:02
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Scientific Publication
Sodium hydrosulfide priming improves the response of photosynthesis to overnight frost and day high‐light in avocado (Persea americana Mill, cv. ‘Hass’)

Elinor Aviv‐Sharon  -The Robert H. Smith Institute of Plant Sciences and Genetics in Agriculture, Hebrew University of Jerusalem, Rehovot, Israel. Department of Biomolecular Sciences, Weizmann Institute of Science, Rehovot, Israel

Sodium hydrosulfide priming improves the response of photosynthesis to overnight frost and day high‐light in avocado (Persea americana Mill, cv. ‘Hass’)

Radiation frost events, which have become more common in the Mediterranean Basin in recent years, inflict extensive damage to tropical/subtropical fruit crops. During radiation frost, sub-zero temperatures are encountered in the dark, followed by high light during the subsequent clear-sky day. One of the key processes affected by these conditions is photosynthesis, which, when significantly inhibited, leads to the enhanced accumulation of reactive oxygen species (ROS) and damage. The use of ‘chemical priming’ treatments that induce plants’ endogenous stress responses, is a possible strategy to improve their coping with stress conditions. Herein, we studied the effects of priming with sodium hydrosulfide (NaHS), a donor of hydrogen sulfide (H2S), on the response of photosynthesis to overnight frost and day high-light conditions in ‘Hass’ avocado (Persea americana Mill). We found that priming with a single foliar application of NaHS had positive effects on the response of grafted ‘Hass’ plants. Primed plants exhibited significantly reduced inhibition of CO2 assimilation, a lower accumulation of hydrogen peroxide as well as lower photoinhibition, as compared to untreated plants. The ability to maintain a high CO2 assimilation capacity after the frost was attained on the background of considerable inhibition in stomatal conductance. Thus, it was likely related to the lower accumulation of ROS and photo-damage observed in primed ‘Hass’ plants. This work contributes toward the understanding of the response of photosynthesis in a subtropical crop species to frost conditions and provides a prospect for chemical priming as a potential practice in orchards during cold winters

Scientific Publication
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