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פותח על ידי קלירמאש פתרונות בע"מ -
Expression of Hexokinase in Stomata of Citrus Fruit Reduces Fruit Transpiration and Affects Seed Development
Year:
2020
Source of publication :
Frontiers in Plant Science
Authors :
ארד, טל
;
.
גרנות, דוד
;
.
יניב, יוסי
;
.
יסלזון, ילנה
;
.
כרמי, ניר
;
.
לוגסי, ניצן
;
.
קלי, גילאור
;
.
רווה, ערן
;
.
שפר, ארתור
;
.
Volume :
11
Co-Authors:

Farkash, C. - Institute of Plant Sciences, Agricultural Research Organization, The Volcani Center, Bet Dagan, Israel.
 

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

The temporal formation and spatial distribution of stomata on the surface of citrus floral organs and, specifically, on the ovule from which the fruit develops, were analyzed using citrus plants that express green fluorescent protein (GFP) under the guard cell-specific KST1 promoter. Stomata are found on the style, sepal, and anther of the closed flower and on ovules from the stage of anthesis. It has previously been shown that hexokinase (HXK) mediates sugar-sensing in leaf guard cells and stimulates stomatal closure. The activity and response of citrus fruit stomata to sugar-sensing by HXK was examined using plants that express HXK under the KST1 promoter. Those plants are referred to as GCHXK plants. The transpiration of young green GCHXK citrus fruits was significantly reduced, indicating that their stomata respond to sugar similar to leaf stomata. Toward fruit maturation, fruit stomata are plugged and stop functioning, which explains why WT and GCHXK mature yellow fruits exhibited similar water loss. Seeds of the GCHXK plants were smaller and germinated more slowly than the WT seeds. We suggest that the stomata of young green citrus fruits, but not mature yellow fruits, respond to sugar levels via HXK and that fruit stomata are important for proper seed development.

Note:
Related Files :
Floral organs
fruit stomata
fruit transpiration
hexokinase
Sugar-sensing
עוד תגיות
תוכן קשור
More details
DOI :
10.3389/fpls.2020.00255
Article number:
0
Affiliations:
Database:
PubMed
Publication Type:
מאמר
;
.
Language:
אנגלית
Editors' remarks:
ID:
47115
Last updated date:
02/03/2022 17:27
Creation date:
30/03/2020 23:27
Scientific Publication
Expression of Hexokinase in Stomata of Citrus Fruit Reduces Fruit Transpiration and Affects Seed Development
11

Farkash, C. - Institute of Plant Sciences, Agricultural Research Organization, The Volcani Center, Bet Dagan, Israel.
 

Expression of Hexokinase in Stomata of Citrus Fruit Reduces Fruit Transpiration and Affects Seed Development

The temporal formation and spatial distribution of stomata on the surface of citrus floral organs and, specifically, on the ovule from which the fruit develops, were analyzed using citrus plants that express green fluorescent protein (GFP) under the guard cell-specific KST1 promoter. Stomata are found on the style, sepal, and anther of the closed flower and on ovules from the stage of anthesis. It has previously been shown that hexokinase (HXK) mediates sugar-sensing in leaf guard cells and stimulates stomatal closure. The activity and response of citrus fruit stomata to sugar-sensing by HXK was examined using plants that express HXK under the KST1 promoter. Those plants are referred to as GCHXK plants. The transpiration of young green GCHXK citrus fruits was significantly reduced, indicating that their stomata respond to sugar similar to leaf stomata. Toward fruit maturation, fruit stomata are plugged and stop functioning, which explains why WT and GCHXK mature yellow fruits exhibited similar water loss. Seeds of the GCHXK plants were smaller and germinated more slowly than the WT seeds. We suggest that the stomata of young green citrus fruits, but not mature yellow fruits, respond to sugar levels via HXK and that fruit stomata are important for proper seed development.

Scientific Publication
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