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Role of Pea LTPs and Abscisic Acid in Salt-Stressed Roots.
- Source :
-
Biomolecules [Biomolecules] 2019 Dec 20; Vol. 10 (1). Date of Electronic Publication: 2019 Dec 20. - Publication Year :
- 2019
-
Abstract
- Lipid transfer proteins (LTPs) are a class of small, cationic proteins that bind and transfer lipids and play an important role in plant defense. However, their precise biological role in plants under adverse conditions including salinity and possible regulation by stress hormone abscisic acid (ABA) remains unknown. In this work, we studied the localization of LTPs and ABA in the roots of pea plants using specific antibodies. Presence of LTPs was detected on the periphery of the cells mainly located in the phloem. Mild salt stress (50 mM NaCI) led to slowing plant growth and higher immunostaining for LTPs in the phloem. The deposition of suberin in Casparian bands located in the endoderma revealed with Sudan III was shown to be more intensive under salt stress and coincided with the increased LTP staining. All obtained data suggest possible functions of LTPs in pea roots. We assume that these proteins can participate in stress-induced pea root suberization or in transport of phloem lipid molecules. Salt stress increased ABA immunostaining in pea root cells but its localization was different from that of the LTPs. Thus, we failed to confirm the hypothesis regarding the direct influence of ABA on the level of LTPs in the salt-stressed root cells.<br />Competing Interests: The authors declare no conflicts of interest.
- Subjects :
- Carrier Proteins genetics
Gene Expression Regulation, Plant
Pisum sativum genetics
Plant Proteins genetics
Plant Roots genetics
Salt Stress
Abscisic Acid metabolism
Carrier Proteins metabolism
Pisum sativum metabolism
Plant Proteins metabolism
Plant Roots metabolism
Sodium Chloride metabolism
Subjects
Details
- Language :
- English
- ISSN :
- 2218-273X
- Volume :
- 10
- Issue :
- 1
- Database :
- MEDLINE
- Journal :
- Biomolecules
- Publication Type :
- Academic Journal
- Accession number :
- 31877653
- Full Text :
- https://doi.org/10.3390/biom10010015