干旱区生态环境知识资源中心(Arid): Early Identification of Plant Drought Stress Responses: Changes in Leaf Reflectance and Plant Growth Promoting Rhizobacteria Selection-The Case Study of Tomato Plants

Arid

DOI	10.3390/agronomy13010183
	Early Identification of Plant Drought Stress Responses: Changes in Leaf Reflectance and Plant Growth Promoting Rhizobacteria Selection-The Case Study of Tomato Plants
	Rosa, Ana Paula; Barao, Lucia; Chambel, Lelia; Cruz, Cristina; Santana, Margarida Maria
通讯作者	Santana, MM
来源期刊	AGRONOMY-BASEL
EISSN	2073-4395
出版年	2023
卷号	13 期号:1
英文摘要	Drought is a worldwide problem, especially in arid and semi-arid regions. Detection of drought stress at the initial stages, before visible signs, to adequately manage irrigation and crop fertilization to avoid crop yield loss, is a desire of most farmers. Here, we evaluated the response of tomato plants to water scarcity, through changes in leaf reflectance due to modification in leaf pigments' content, which translates into differences in spectral reflectance indices (SRI) values. Our methodology is innovative, as we were able to easily calculate and identify several SRIs for the early detection of drought stress invisible responses. We used a handheld spectro-radiometer to obtain SRI values from leaves of tomato plants growing under two different water regimes for 37 days. In an ensemble of 25 SRIs, we identified 12 that showed a consistent trend of significant differences between treatments along the experiment and within these, NDVI, SR, ZMI, Ctr2, GM1, and GM2 were already significantly different between treatments at day 7 after the start of the experiment and Ctr1 at day 9; although, no signs of damage were visible. Therefore, our results pinpoint these SRIs as promising proxies for the early detection of invisible responses to drought onset. We also analyzed the relationship between the monitored SRIs and plant morphological parameters measured during the experiment, highlighting a relationship between GM1 and plant height and leaf number. Finally, we observed a high abundance of putative beneficial bacteria among isolates collected from the tomato water-limited rhizo-environment at the terminus of the experiment, suggesting the active recruitment or selection of Plant Growth Promoting Rhizobacteria by tomato roots as a response to drought. Our work may be adapted into an easy protocol, of rapid execution, to be used in small-scale fields for early drought stress detection.
英文关键词	crop management drought stress drought symptoms spectral reflectance indices PGPR
类型	Article
语种	英语
开放获取类型	gold
收录类别	SCI-E
WOS记录号	WOS:000914229700001
WOS关键词	RADIATION-USE EFFICIENCY ; CHLOROPHYLL CONTENT ; VEGETATION INDEXES ; CANOPY ; WHEAT ; BACTERIA ; YIELD ; DNA ; EXTRACTION ; TOLERANCE
WOS类目	Agronomy ; Plant Sciences
WOS研究方向	Agriculture ; Plant Sciences
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/395183
推荐引用方式 GB/T 7714	Rosa, Ana Paula,Barao, Lucia,Chambel, Lelia,et al. Early Identification of Plant Drought Stress Responses: Changes in Leaf Reflectance and Plant Growth Promoting Rhizobacteria Selection-The Case Study of Tomato Plants[J],2023,13(1).
APA	Rosa, Ana Paula,Barao, Lucia,Chambel, Lelia,Cruz, Cristina,&Santana, Margarida Maria.(2023).Early Identification of Plant Drought Stress Responses: Changes in Leaf Reflectance and Plant Growth Promoting Rhizobacteria Selection-The Case Study of Tomato Plants.AGRONOMY-BASEL,13(1).
MLA	Rosa, Ana Paula,et al."Early Identification of Plant Drought Stress Responses: Changes in Leaf Reflectance and Plant Growth Promoting Rhizobacteria Selection-The Case Study of Tomato Plants".AGRONOMY-BASEL 13.1(2023).