Academic Journal
Growth Performance and Osmolyte Regulation of Drought-Stressed Walnut Plants Are Improved by Mycorrhiza
| العنوان: | Growth Performance and Osmolyte Regulation of Drought-Stressed Walnut Plants Are Improved by Mycorrhiza |
|---|---|
| المؤلفون: | Yue Wen, Li-Jun Zhou, Yong-Jie Xu, Abeer Hashem, Elsayed Fathi Abd_Allah, Qiang-Sheng Wu |
| المصدر: | Agriculture, Vol 14, Iss 3, p 367 (2024) |
| بيانات النشر: | MDPI AG |
| سنة النشر: | 2024 |
| المجموعة: | Directory of Open Access Journals: DOAJ Articles |
| مصطلحات موضوعية: | betaine, mycorrhizal symbiosis, soil water deficit, walnut, Agriculture (General), S1-972 |
| الوصف: | This study aims to evaluate whether a selected arbuscular mycorrhizal fungus, Diversispora spurca , improves growth in drought-stressed walnut ( Juglans regia L. cv. Qingxiang) plants and whether this improvement is associated with changes in osmolyte (fructose, glucose, sucrose, soluble protein, proline, and betaine) levels. After 60 days of soil drought treatment (50% of maximum field water-holding capacity), root D. spurca colonization rate and soil mycelium length decreased by 13.57% and 64.03%, respectively. Soil drought also inhibited the growth performance of aboveground (stem diameter, leaf number, leaf biomass, and stem biomass) and underground (root projected area, surface area, and average diameter) parts, with uninoculated plants showing a stronger inhibition than D . spurca -inoculated plants. D. spurca significantly increased these growth variables, along with aboveground part variables and root areas being more prominent under drought stress versus non-stress conditions. Although drought treatment suppressed the chlorophyll index and nitrogen balance index in leaves, mycorrhizal inoculation significantly increased these indices. Walnut plants were able to actively increase leaf fructose, glucose, sucrose, betaine, and proline levels under such drought stress. Inoculation of D. spurca also significantly increased leaf fructose, glucose, sucrose, betaine, proline, and soluble protein levels under drought stress and non-stress, with the increasing trend in betaine and soluble protein being higher under drought stress versus non-stress. Drought stress dramatically raised leaf hydrogen peroxide (H 2 O 2 ) levels in both inoculated and uninoculated plants, while mycorrhizal plants presented significantly lower H 2 O 2 levels, with the decreasing trend higher under drought stress versus non-stress. In conclusion, D. spurca symbiosis can increase the growth of drought-stressed walnut plants, associated with increased osmolyte levels and decreased H 2 O 2 levels. |
| نوع الوثيقة: | article in journal/newspaper |
| اللغة: | English |
| تدمد: | 2077-0472 |
| Relation: | https://www.mdpi.com/2077-0472/14/3/367; https://doaj.org/toc/2077-0472; https://doaj.org/article/353bd8a6cff4437da10215f1f06e2863 |
| DOI: | 10.3390/agriculture14030367 |
| الاتاحة: | https://doi.org/10.3390/agriculture14030367 https://doaj.org/article/353bd8a6cff4437da10215f1f06e2863 |
| رقم الانضمام: | edsbas.EE5DEC4 |
| قاعدة البيانات: | BASE |
Full Text Finder | تدمد: | 20770472 |
|---|---|
| DOI: | 10.3390/agriculture14030367 |