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קהילה:
אסיף מאגר המחקר החקלאי
פותח על ידי קלירמאש פתרונות בע"מ -
Glycosylated flavonoids: fruit's concealed antifungal arsenal
Year:
2020
Source of publication :
New Phytologist
Authors :
אורן-שמיר, מיכל
;
.
אלקן, נעם
;
.
גלסורקר, אורטל
;
.
מאורר, דליה
;
.
מעוז, איתי
;
.
סודהיראן, פראדיפ קומאר
;
.
סלע, נעה
;
.
עובדיה, רינת
;
.
פייגנברג, אולג
;
.
Volume :
225
Co-Authors:
Facilitators :
From page:
1788
To page:
1798
(
Total pages:
11
)
Abstract:

Fruit defense against pathogens relies on induced and preformed mechanisms. The present contribution evaluated performed resistance of red and green mango fruit against the fungal pathogen Colletotrichum gloeosporioides and identified the main active antifungal components. High-performance liquid chromatography analysis of nonhydrolyzed mango peel extracts identified major anthocyanin peaks of glycosylated cyanidin and methylcyanidin, and flavonol peaks of glycosylated quercetin and kaempferol, which were more abundant on the 'red side' of red mango fruit. Organic extracts of red vs green mango peel were more efficient in inhibiting C. gloeosporioides. Transcriptome analysis of the mango–C. gloeosporioides interaction showed increased expression of glucosidase genes related to both fungal pathogenicity and host defense. Glucosidase treatment of organic peel extract increased its antifungal activity. Additionally, quercetin and cyanidin had significantly higher antifungal activity than their glycosylated derivatives. Peel extract volatiles treated with glucosidase had antifungal activity. GCMS analysis identified 15 volatiles after glucosidase hydrolysis, seven of them present only in red fruit. These results suggest that the fruit obtains a concealed arsenal of glycosylated flavonoids in its peel when they are hydrolyzed by β-glucosidase that is induced in both fungus and host during infection process, become more toxic to the fungal pathogen, inhibiting decay development. © 2019 The Authors. New Phytologist © 2019 New Phytologist Trust

Note:
Related Files :
antifungal activity
Colletotrichum gloeosporioides
GC–MS
glycosylated flavonoid
HPLC
kaempferol
quercetin
β-glucosidase
עוד תגיות
תוכן קשור
More details
DOI :
10.1111/nph.16251
Article number:
0
Affiliations:
Database:
סקופוס
Publication Type:
מאמר
;
.
Language:
אנגלית
Editors' remarks:
ID:
45721
Last updated date:
02/03/2022 17:27
Creation date:
01/01/2020 14:30
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Scientific Publication
Glycosylated flavonoids: fruit's concealed antifungal arsenal
225
Glycosylated flavonoids: fruit's concealed antifungal arsenal

Fruit defense against pathogens relies on induced and preformed mechanisms. The present contribution evaluated performed resistance of red and green mango fruit against the fungal pathogen Colletotrichum gloeosporioides and identified the main active antifungal components. High-performance liquid chromatography analysis of nonhydrolyzed mango peel extracts identified major anthocyanin peaks of glycosylated cyanidin and methylcyanidin, and flavonol peaks of glycosylated quercetin and kaempferol, which were more abundant on the 'red side' of red mango fruit. Organic extracts of red vs green mango peel were more efficient in inhibiting C. gloeosporioides. Transcriptome analysis of the mango–C. gloeosporioides interaction showed increased expression of glucosidase genes related to both fungal pathogenicity and host defense. Glucosidase treatment of organic peel extract increased its antifungal activity. Additionally, quercetin and cyanidin had significantly higher antifungal activity than their glycosylated derivatives. Peel extract volatiles treated with glucosidase had antifungal activity. GCMS analysis identified 15 volatiles after glucosidase hydrolysis, seven of them present only in red fruit. These results suggest that the fruit obtains a concealed arsenal of glycosylated flavonoids in its peel when they are hydrolyzed by β-glucosidase that is induced in both fungus and host during infection process, become more toxic to the fungal pathogen, inhibiting decay development. © 2019 The Authors. New Phytologist © 2019 New Phytologist Trust

Scientific Publication
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