Lallemantia species response to drought stress and Arbuscular mycorrhizal fungi application

Arezoo Paravar | Alireza Rezazadeh | Saeideh Maleki Farahani

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URL :   http://research.shahed.ac.ir/WSR/WebPages/Report/PaperView.aspx?PaperID=158826
Date :  2021/09/23
Publish in :    Industrial Crops and Products
DOI :  https://doi.org/10.1016/j.indcrop.2021.114002
Link :  http://dx.doi.org/10.1016/j.indcrop.2021.114002
Keywords :Enzyme activities,Oil content,Root colonization,Seed yield,Fatty acids

Abstract :

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The dragon’s head (Lallemantia iberica L.) and ladys mantle (L. royleana L.) are potential sources of plant oil, mucilage, and omega-3 fatty acid. An effective plant-arbuscular mycorrhizal fungi (AMF) symbiosis can improve plant growth and development, especially under drought stress. This study aimed to evaluate the effects of AMF inoculation on the growth, yield, fatty acid compositions, and physiological processes of L. iberica and L. royleana under various irrigation intervals (i.e., irrigation after 30 (I30), 60 (I60), and 90 (I90) of soil available water depletion). The results showed improved growth parameters, seed yield, chlorophyll concentration, stomatal movement, antioxidant enzyme activities, and radical scavenging activity in AMF-inoculated plants in both species compared to control plants (without AMF inoculation). Moreover, the seed of AMF-inoculated plants had higher phosphor uptake, mucilage, and oil content. Interestingly, AMF application modified the profile of seed fatty acids such as eicosenoic, arachidic, linolenic, and linoleic acids. Although water deficit drastically affected control plants, AMF-inoculated plants under I60 treatment showed relatively more incredible performance in both species. On the other hand, inoculated plants showed higher antioxidant activity and less reactive oxygen species accumulation than control plants. The results suggested that irrigation after 60 of soil available water depletion coupled with AMF inoculation can lead to optimized production of L. iberica and L. royleana in semi-arid environments.