Expression of Hexokinase in Stomata of Citrus Fruit Reduces Fruit Transpiration and Affects Seed Development
| العنوان: | Expression of Hexokinase in Stomata of Citrus Fruit Reduces Fruit Transpiration and Affects Seed Development |
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| المؤلفون: | Tal Arad, David Granot, Eran Raveh, Yelena Yeselson, Chagai Farkash, Yossi Yaniv, Nir Carmi, Arthur A. Schaffer, Nitsan Lugassi, Gilor Kelly |
| المصدر: | Frontiers in Plant Science Frontiers in Plant Science, Vol 11 (2020) |
| سنة النشر: | 2019 |
| مصطلحات موضوعية: | 0106 biological sciences, 0301 basic medicine, Stamen, Plant Science, lcsh:Plant culture, Biology, 01 natural sciences, Sepal, sugar-sensing, 03 medical and health sciences, Anthesis, Guard cell, lcsh:SB1-1110, Ovule, Sugar, Original Research, Transpiration, hexokinase, fruit transpiration, fungi, food and beverages, Horticulture, floral organs, 030104 developmental biology, fruit stomata, Germination, 010606 plant biology & botany |
| الوصف: | 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. |
| تدمد: | 1664-462X |
| URL الوصول: | https://explore.openaire.eu/search/publication?articleId=doi_dedup___::e5c3e24f79f9fb1643815505f446acba https://pubmed.ncbi.nlm.nih.gov/32211009 |
| Rights: | OPEN |
| رقم الانضمام: | edsair.doi.dedup.....e5c3e24f79f9fb1643815505f446acba |
| قاعدة البيانات: | OpenAIRE |
| تدمد: | 1664462X |
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