干旱区生态环境知识资源中心(Arid): Foliar Application of Nano-Silicon Improves the Physiological and Biochemical Characteristics of 'Kalamata' Olive Subjected to Deficit Irrigation in a Semi-Arid Climate

Arid

DOI	10.3390/plants11121561
	Foliar Application of Nano-Silicon Improves the Physiological and Biochemical Characteristics of 'Kalamata' Olive Subjected to Deficit Irrigation in a Semi-Arid Climate
	Hassan, Islam F.; Ajaj, Rahaf; Gaballah, Maybelle S.; Ogbaga, Chukwuma C.; Kalaji, Hazem M.; Hatterman-Valenti, Harlene M.; Alam-Eldein, Shamel M.
通讯作者	Hassan, IF
来源期刊	PLANTS-BASEL
ISSN	2223-7747
出版年	2022
卷号	11 期号:12
英文摘要	In Egypt's arid and semi-arid lands where the main olive production zone is located, evapotranspiration is higher than rainfall during winter. Limited research has used nanomaterials, especially nano-silicon (nSi) to improve the growth, development, and productivity of drought-stressed fruit trees, amid the global water scarcity problem. To assess the role of nSi on drought-sensitive 'Kalamata' olive tree growth, and biochemical and physiological changes under drought conditions, a split-plot experiment was conducted in a randomized complete block design. The trees were foliar sprayed with nSi in the field using nine treatments (three replicates each) of 0, 150, and 200 mg.L-1 under different irrigation regimes (100, 90, and 80% irrigation water requirements 'IWR') during the 2020 and 2021 seasons. Drought negatively affected the trees, but both concentrations of nSi alleviated drought effects at reduced irrigation levels, compared to the non-stressed trees. Foliar spray of both concentrations of nSi at a moderate level (90% IWR) of drought resulted in improved yield and fruit weight and reduced fruit drop percentage, compared to 80% IWR. In addition, there were reduced levels of osmoprotectants such as proline, soluble sugars, and abscisic acid (ABA) with less membrane damage expressed as reduced levels of malondialdehyde (MDA), H2O2 and electrolyte leakage at 90% compared to 80% IWR. These results suggest that 'Kalamata' olive trees were severely stressed at 80% compared to 90% IWR, which was not surprising as it is classified as drought sensitive. Overall, the application of 200 mg.L-1 nSi was beneficial for the improvement of the mechanical resistance, growth, and productivity of moderately-stressed (90% IWR) 'Kalamata' olive trees under the Egyptian semi-arid conditions.
英文关键词	abscisic acid antioxidants chloroplast degeneration drought malondialdehyde nanoparticles oxidative stress photosynthesis
类型	Article
语种	英语
开放获取类型	Green Published, gold
收录类别	SCI-E
WOS记录号	WOS:000816073000001
WOS关键词	OLEA-EUROPAEA L. ; DROUGHT STRESS ; WATER-DEFICIT ; ABSCISIC-ACID ; SIO2 NANOPARTICLES ; GAS-EXCHANGE ; ANTIOXIDANT ACTIVITY ; FRUIT-DEVELOPMENT ; OXIDATIVE DAMAGE ; PLANT
WOS类目	Plant Sciences
WOS研究方向	Plant Sciences
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/393990
推荐引用方式 GB/T 7714	Hassan, Islam F.,Ajaj, Rahaf,Gaballah, Maybelle S.,et al. Foliar Application of Nano-Silicon Improves the Physiological and Biochemical Characteristics of 'Kalamata' Olive Subjected to Deficit Irrigation in a Semi-Arid Climate[J],2022,11(12).
APA	Hassan, Islam F..,Ajaj, Rahaf.,Gaballah, Maybelle S..,Ogbaga, Chukwuma C..,Kalaji, Hazem M..,...&Alam-Eldein, Shamel M..(2022).Foliar Application of Nano-Silicon Improves the Physiological and Biochemical Characteristics of 'Kalamata' Olive Subjected to Deficit Irrigation in a Semi-Arid Climate.PLANTS-BASEL,11(12).
MLA	Hassan, Islam F.,et al."Foliar Application of Nano-Silicon Improves the Physiological and Biochemical Characteristics of 'Kalamata' Olive Subjected to Deficit Irrigation in a Semi-Arid Climate".PLANTS-BASEL 11.12(2022).