Resveratrol Alleviates the KCl Salinity Stress of Malus hupehensis Rhed

Abstract

Applying large amounts of potash fertilizer in apple orchards for high apple quality and yield aggravates KCl stress. As a phytoalexin, resveratrol (Res) participates in plant resistance to biotic stress. However, its role in relation to KCl stress has never been reported. Herein we investigated the role of Res in KCl stress response of Malus hupehensis Rehd., a widely used apple rootstock in China which is sensitive to KCl stress. KCl-stressed apple seedlings showed significant wilting phenotype and decline in photosynthetic rate, and the application of 100 μmol Res alleviated KCl stress and maintained photosynthetic capacity. Exogenous Res can strengthen the activities of peroxidase and catalase, thus eliminating reactive oxygen species production induced by KCl stress. Moreover, exogenous Res can decrease the electrolyte leakage by accumulating proline for osmotic balance under KCl stress. Furthermore, exogenous Res application can affect K+/Na+ homeostasis in cytoplasm by enhancing K+ efflux outside the cells, inhibiting Na+ efflux and K+ absorption, and compartmentalizing K+ into vacuoles through regulating the expression of K+ and Na+ transporter genes. These findings provide a theoretical basis for the application of exogenous Res to relieve the KCl stress of apples.

Optimal NPK Fertilizer Combination Increases Panax ginseng Yield and Quality and Affects Diversity and Structure of Rhizosphere Fungal Communities

“…Nitrogen fertilization causes notable changes in N-cycling microbes, especially those in fungal communities (Guo et al, 2018 ; Du et al, 2019 ). Potassium is important in carbohydrate and protein metabolism and is recognized as an element that affects the quality (Li et al, 2021b ). The application of K fertilizer can increase crop yield and quality, and it is also widely used in preventing and treating plant and soil diseases (Pradip et al, 2016 ).…”

SES1 is vital for seedling establishment and post-germination growth under high-potassium stress conditions in Arabidopsis thaliana

“…Under KCl stress conditions, plants are typically stressed in three ways: ionic stress, osmotic stress, and oxidative damage ( Li et al, 2021a ; Li et al, 2021b ; Zheng et al, 2021 ). We found that SES1 can maintain the seedling K + /Na + balance, and the expression of K + transporter genes and ER stress-related genes were altered between WT and ses1 mutants under high potassium conditions during seedling establishment and post-germination growth.…”

Editorial: Nutrient Interactions in Plants

“…The perspective article is devoted to describing new approaches based on computational analysis to predict interactions between proteins related to different elements (Di Silvestre et al). Finally, within the 13 original research articles; eight of them are about the interactions between two or three elements, including non-essential ones, such as Fe-Cu, Si-Fe, Fe-P-S, S-N, Fe-Zn, K-Na, or P-Zn (Bernal and Kramer, 2021;Jian et al, 2021;Kakei et al, 2021;Li et al, 2021;Chaiwong et al;García et For instance, P deficiency, through organic acid release and rhizosphere acidification, can promote the mobilization of other nutrients, like Fe or Zn (Pueyo et al, 2021). In the same way, Si application can promote N and P acquisition by upregulating nitrate and phosphate transporters (Pavlovic et al, 2021).…”

“…The perspective article is devoted to describing new approaches based on computational analysis to predict interactions between proteins related to different elements ( Di Silvestre et al ). Finally, within the 13 original research articles; eight of them are about the interactions between two or three elements, including non-essential ones, such as Fe-Cu, Si-Fe, Fe-P-S, S-N, Fe-Zn, K-Na, or P-Zn (Bernal and Kramer, 2021 ; Jian et al, 2021 ; Kakei et al, 2021 ; Li et al, 2021 ; Chaiwong et al ; García et al ; Suman et al ; Yu et al ); four of them are about the interactions among many nutrients, such as ionome-macronutrients, ionome-micronutrients, ionome-N ( Courbet et al ; D'Oria et al ; Zhang C. et al ; Zhang J. et al ); and one is devoted to the substitution of K by Na ( Mateus et al ).…”

“…The articles included in this Research Topic reflect indirect interactions between nutrients, such as those simultaneously analyzing many nutrients ( Courbet et al ; D'Oria et al ; Zhang C. et al ; Zhang J. et al ), and also direct interactions, like those studying the interplay between 2 and 3 elements (Bernal and Kramer, 2021 ; Jian et al, 2021 ; Kakei et al, 2021 ; Li et al, 2021 ; Chaiwong et al ; García et al ; Mateus et al ; Suman et al ; Yu et al ). The depicted interactions occur at different steps of nutrient acquisition and translocation inside the plant.…”