Abstract
Peanut is one of the most important oil crops in the world, the growth and productivity of which are severely affected by salt stress. 24-epibrassinolide (EBL) plays an important role in stress resistances. However, the roles of exogenous EBL on the salt tolerance of peanut remain unclear. In this study, peanut seedlings treated with 150 mM NaCl and with or without EBL spray were performed to investigate the roles of EBL on salt resistance. Under 150 mM NaCl conditions, foliar application of 0.1 µM EBL increased the activity of catalase and thereby could eliminate reactive oxygen species (ROS). Similarly, EBL application promoted the accumulation of proline and soluble sugar, thus maintaining osmotic balance. Furthermore, foliar EBL spray enhanced the total chlorophyll content and high photosynthesis capacity. Transcriptome analysis showed that under NaCl stress, EBL treatment up-regulated expression levels of genes encoding peroxisomal nicotinamide adenine dinucleotide carrier (PMP34), probable sucrose-phosphate synthase 2 (SPS2) beta-fructofuranosidase (BFRUCT1) and Na+/H+ antiporters (NHX7 and NHX8), while down-regulated proline dehydrogenase 2 (PRODH). These findings provide valuable resources for salt resistance study in peanut and lay the foundation for using BR to enhance salt tolerance during peanut production.
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Claims 5
Claim · model-written summary
EBL increased catalase activity under salt stress.
- Taxon
- Peanut
Arachis hypogaeat0 - Treatment
- foliar application of 0.1 µM EBLe0
- Outcome
- activity of catalasee0
- Direction
- increasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Under 150 mM NaCl conditions, foliar application of 0.1 µM EBL increased the activity of catalase”
t0“Peanut”
Claim · model-written summary
EBL promoted proline and soluble sugar accumulation.
- Taxon
- PeanutArachis hypogaeat0
- Treatment
- EBL applicatione0
- Outcome
- accumulation of proline and soluble sugare0
- Direction
- promotede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“EBL application promoted the accumulation of proline and soluble sugar”
t0“Peanut”
Claim · model-written summary
EBL enhanced chlorophyll content and photosynthesis.
- Taxon
- PeanutArachis hypogaeat0
- Treatment
- foliar EBL spraye0
- Outcome
- total chlorophyll content and high photosynthesis capacitye0
- Direction
- enhancede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“foliar EBL spray enhanced the total chlorophyll content and high photosynthesis capacity”
t0“Peanut”
Claim · model-written summary
EBL upregulated PMP34, SPS2, BFRUCT1, NHX7 and NHX8.
- Taxon
- PeanutArachis hypogaeat0
- Treatment
- EBL treatmente0
- Outcome
- expression levelse0
- Direction
- up-regulatede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“EBL treatment up-regulated expression levels of genes encoding peroxisomal nicotinamide adenine dinucleotide carrier (PMP34), probable sucrose-phosphate synthase 2 (SPS2) beta-fructofuranosidase (BFRUCT1) and Na+/H+ antiporters (NHX7 and NHX8)”
t0“Peanut”
Claim · model-written summary
EBL downregulated PRODH.
- Taxon
- PeanutArachis hypogaeat0
- Treatment
- 24-Epibrassinolidet0
- Outcome
- proline dehydrogenase 2 (PRODH)e0
- Direction
- down-regulatede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“while down-regulated proline dehydrogenase 2 (PRODH)”
t0“Exogenous Application of 24-Epibrassinolide in Peanut”
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