Mild salt stress conditions induce different responses in root hydraulic conductivity of phaseolus vulgaris over-time.
Plants respond to salinity by altering their physiological parameters in order to maintain their water balance. The reduction in root hydraulic conductivity is one of the first responses of plants to the presence of salt in order to minimize water stress. Although its regulation has been commonly at...
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Public Library of Science (PLoS)
2014-01-01
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| Series: | PLoS ONE |
| Online Access: | https://journals.plos.org/plosone/article/file?id=10.1371/journal.pone.0090631&type=printable |
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| author | Monica Calvo-Polanco Beatriz Sánchez-Romera Ricardo Aroca |
| author_facet | Monica Calvo-Polanco Beatriz Sánchez-Romera Ricardo Aroca |
| author_sort | Monica Calvo-Polanco |
| collection | DOAJ |
| description | Plants respond to salinity by altering their physiological parameters in order to maintain their water balance. The reduction in root hydraulic conductivity is one of the first responses of plants to the presence of salt in order to minimize water stress. Although its regulation has been commonly attributed to aquaporins activity, osmotic adjustment and the toxic effect of Na+ and Cl- have also a main role in the whole process. We studied the effects of 30 mM NaCl on Phaseolus vulgaris plants after 9 days and found different responses in root hydraulic conductivity over-time. An initial and final reduction of root hydraulic conductivity, stomatal conductance, and leaf water potential in response to NaCl was attributed to an initial osmotic shock after 1 day of treatment, and to the initial symptoms of salt accumulation within the plant tissues after 9 days of treatment. After 6 days of NaCl treatment, the increase in root hydraulic conductivity to the levels of control plants was accompanied by an increase in root fructose content, and with the intracellular localization of root plasma membrane aquaporins (PIP) to cortex cells close to the epidermis and to cells surrounding xylem vessels. Thus, the different responses of bean plants to mild salt stress over time may be connected with root fructose accumulation, and intracellular localization of PIP aquaporins. |
| format | Article |
| id | doaj-art-a492ec70bfc74ffeb9dfef09e975d200 |
| institution | DOAJ |
| issn | 1932-6203 |
| language | English |
| publishDate | 2014-01-01 |
| publisher | Public Library of Science (PLoS) |
| record_format | Article |
| series | PLoS ONE |
| spelling | doaj-art-a492ec70bfc74ffeb9dfef09e975d2002025-08-20T03:01:11ZengPublic Library of Science (PLoS)PLoS ONE1932-62032014-01-0193e9063110.1371/journal.pone.0090631Mild salt stress conditions induce different responses in root hydraulic conductivity of phaseolus vulgaris over-time.Monica Calvo-PolancoBeatriz Sánchez-RomeraRicardo ArocaPlants respond to salinity by altering their physiological parameters in order to maintain their water balance. The reduction in root hydraulic conductivity is one of the first responses of plants to the presence of salt in order to minimize water stress. Although its regulation has been commonly attributed to aquaporins activity, osmotic adjustment and the toxic effect of Na+ and Cl- have also a main role in the whole process. We studied the effects of 30 mM NaCl on Phaseolus vulgaris plants after 9 days and found different responses in root hydraulic conductivity over-time. An initial and final reduction of root hydraulic conductivity, stomatal conductance, and leaf water potential in response to NaCl was attributed to an initial osmotic shock after 1 day of treatment, and to the initial symptoms of salt accumulation within the plant tissues after 9 days of treatment. After 6 days of NaCl treatment, the increase in root hydraulic conductivity to the levels of control plants was accompanied by an increase in root fructose content, and with the intracellular localization of root plasma membrane aquaporins (PIP) to cortex cells close to the epidermis and to cells surrounding xylem vessels. Thus, the different responses of bean plants to mild salt stress over time may be connected with root fructose accumulation, and intracellular localization of PIP aquaporins.https://journals.plos.org/plosone/article/file?id=10.1371/journal.pone.0090631&type=printable |
| spellingShingle | Monica Calvo-Polanco Beatriz Sánchez-Romera Ricardo Aroca Mild salt stress conditions induce different responses in root hydraulic conductivity of phaseolus vulgaris over-time. PLoS ONE |
| title | Mild salt stress conditions induce different responses in root hydraulic conductivity of phaseolus vulgaris over-time. |
| title_full | Mild salt stress conditions induce different responses in root hydraulic conductivity of phaseolus vulgaris over-time. |
| title_fullStr | Mild salt stress conditions induce different responses in root hydraulic conductivity of phaseolus vulgaris over-time. |
| title_full_unstemmed | Mild salt stress conditions induce different responses in root hydraulic conductivity of phaseolus vulgaris over-time. |
| title_short | Mild salt stress conditions induce different responses in root hydraulic conductivity of phaseolus vulgaris over-time. |
| title_sort | mild salt stress conditions induce different responses in root hydraulic conductivity of phaseolus vulgaris over time |
| url | https://journals.plos.org/plosone/article/file?id=10.1371/journal.pone.0090631&type=printable |
| work_keys_str_mv | AT monicacalvopolanco mildsaltstressconditionsinducedifferentresponsesinroothydraulicconductivityofphaseolusvulgarisovertime AT beatrizsanchezromera mildsaltstressconditionsinducedifferentresponsesinroothydraulicconductivityofphaseolusvulgarisovertime AT ricardoaroca mildsaltstressconditionsinducedifferentresponsesinroothydraulicconductivityofphaseolusvulgarisovertime |