干旱区生态环境知识资源中心(Arid): A Natural Bio-Stimulant Consisting of a Mixture of Fish Protein Hydrolysates and Kelp Extract Enhances the Physiological, Biochemical and Growth Responses of Spinach under Different Water Levels

Arid

DOI	10.3390/plants11233374
	A Natural Bio-Stimulant Consisting of a Mixture of Fish Protein Hydrolysates and Kelp Extract Enhances the Physiological, Biochemical and Growth Responses of Spinach under Different Water Levels
	Liatile, Pule Clement; Potgieter, Gerhard; Moloi, Makoena Joyce
通讯作者	Moloi, MJ
来源期刊	PLANTS-BASEL
ISSN	2223-7747
出版年	2022
卷号	11 期号:23
英文摘要	Spinach (Spinacia oleracea L.) is a highly nutritious, desirable green leafy vegetable, which is less tolerant to drought. This study was conducted to establish the impact of a natural bio-stimulant consisting of a mixture of fish protein hydrolysates and kelp extract (trade name, Xcell Boost) on the physiological and biochemical responses as well as vegetative growth of spinach (Spinacia oleracea L.) under different water levels (100% (full irrigation), 50% (mild drought stress) and 30% (severe drought stress) water holding capacity). Bio-stimulant application at any strength (single, BX1 or double, BX2) had no effect on the photochemical reactions. The application of bio-stimulant at double strength concentration (BX2) increased the chlorophyll and carotenoid contents, as well as the activities of antioxidative enzymes, ascorbate peroxidase (APX) and guaiacol peroxidase (GPX), under drought stress. Application at single strength (BX1) increased the normalised difference vegetation index (NDVI), stomatal conductance, accumulation of osmoprotectants (proline and total soluble sugars) and reduced electrolyte leakage under drought stress. Furthermore, bio-stimulant applications at either concentration induced remarkable increases in plant height, leaf area, stem dry weight, root length and root moisture. Under BX2, APX and stomatal conductance positively correlated with stem dry weight, while root length positively correlated with total chlorophyll content. These results show that Xcell Boost is a highly advantageous bio-stimulant for increasing the tolerance of spinach to drought stress, which can most likely benefit other crops grown in semi-arid and arid areas.
英文关键词	bio-stimulants chlorophyll-a fluorescence drought stress normalised difference vegetation index osmoprotectants photosynthesis Spinacia oleracea stomatal conductance vegetative growth
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:000896194700001
WOS关键词	LEAF CHLOROPHYLL CONTENT ; ELECTROLYTE LEAKAGE ; MAIZE CULTIVARS ; DROUGHT STRESS ; SOLUBLE SUGARS ; FLUORESCENCE ; YIELD ; PHOTOSYNTHESIS ; L. ; MECHANISMS
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/2XILL650/394013
推荐引用方式 GB/T 7714	Liatile, Pule Clement,Potgieter, Gerhard,Moloi, Makoena Joyce. A Natural Bio-Stimulant Consisting of a Mixture of Fish Protein Hydrolysates and Kelp Extract Enhances the Physiological, Biochemical and Growth Responses of Spinach under Different Water Levels[J],2022,11(23).
APA	Liatile, Pule Clement,Potgieter, Gerhard,&Moloi, Makoena Joyce.(2022).A Natural Bio-Stimulant Consisting of a Mixture of Fish Protein Hydrolysates and Kelp Extract Enhances the Physiological, Biochemical and Growth Responses of Spinach under Different Water Levels.PLANTS-BASEL,11(23).
MLA	Liatile, Pule Clement,et al."A Natural Bio-Stimulant Consisting of a Mixture of Fish Protein Hydrolysates and Kelp Extract Enhances the Physiological, Biochemical and Growth Responses of Spinach under Different Water Levels".PLANTS-BASEL 11.23(2022).