Silicon mediates sodium transport and partitioning in maize under moderate salt stress
2018
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Silicon (Si) is known to alleviate salt stress in various crops; however, the influence of Si on sodium (Na) transport and partitioning at the tissue, cell and organelle levels is poorly understood. Maize (Zea mays L.) hybrid sensitive to salt stress was exposed to moderate salt stress (40 mM NaCl; simulating conditions in salinized agricultural soils) without or with supply of 1.5 mM Si(OH)(4). We investigated the expression of SOS genes encoding Na+ efflux transporter in various root tissues of maize, paralleled by measurements of tissue Na concentration. In addition, subcellular localization of Na (using Na fluorescent dye) within the leaf mesophyll cells was also performed. Silicon supplied plants accumulate less Na in both root apex and cortex, but allocate more Na+ to the leaves via the xylem. This was accompanied by increased expression of ZrnSOS1 and ZmSOS2 in the root apex and cortex facilitating Na+ exclusion, and in the root stele for enhanced Na+ loading into the xylem. Als...o, Si down-regulated the expression of ZmHKT1 in the root stele, which further decreased Na+ unloading from the xylem. Consequently, Si increased accumulation of Na in leaves, but also enhances sequestration of Na+ into the vacuoles thereby decreasing Na+ accumulation in the chloroplasts. In response to moderate salt stress in maize, Si shifts the typical glycophyte behavior of this species towards that of halophytes.
Кључне речи:
Vacuole / SOS1 genes / Sodium / Silicon / Salinity / Maize (Zea mays L.)Извор:
Environmental and Experimental Botany, 2018, 155, 681-687Издавач:
- Pergamon-Elsevier Science Ltd, Oxford
Финансирање / пројекти:
- Минерални стрес и адаптације биљака на маргиналним пољопривредним земљиштима (RS-MESTD-Basic Research (BR or ON)-173028)
- Молекуларни механизми одговора биљака на абиотички стрес-улога транскрипционих фактора и малих РНК и анализа генетичког диверзитета биљних култура од интереса за пољопривреду и биотехнологију (RS-MESTD-Basic Research (BR or ON)-173005)
- Комплексне болести као модел систем за проучавање модулације фенотипа-структурна и функционална анализа молекуларних биомаркера (RS-MESTD-Basic Research (BR or ON)-173008)
Напомена:
- This is the peer reviewed vesrion of the article: Bosnić, P., Bosnić, D., Jasnić, J.,& Nikolić, M.. (2018). Silicon mediates sodium transport and partitioning in maize under moderate salt stress. in Environmental and Experimental Botany Pergamon-Elsevier Science Ltd, Oxford., 155, 681-687. https://doi.org/10.1016/j.envexpbot.2018.08.018
- https://www.sciencedirect.com/science/article/abs/pii/S0098847218309493?via%3Dihub
Повезане информације:
- Друга верзија
https://doi.org/10.1016/j.envexpbot.2018.08.018 - Друга верзија
https://imagine.imgge.bg.ac.rs/handle/123456789/1606
DOI: 10.1016/j.envexpbot.2018.08.018
ISSN: 0098-8472
WoS: 000446289500064
Scopus: 2-s2.0-85052116558
Институција/група
Institut za molekularnu genetiku i genetičko inženjerstvoTY - JOUR AU - Bosnić, Predrag AU - Bosnić, Dragana AU - Jasnić, Jovana AU - Nikolić, Miroslav PY - 2018 UR - https://imagine.imgge.bg.ac.rs/handle/123456789/1154 AB - Silicon (Si) is known to alleviate salt stress in various crops; however, the influence of Si on sodium (Na) transport and partitioning at the tissue, cell and organelle levels is poorly understood. Maize (Zea mays L.) hybrid sensitive to salt stress was exposed to moderate salt stress (40 mM NaCl; simulating conditions in salinized agricultural soils) without or with supply of 1.5 mM Si(OH)(4). We investigated the expression of SOS genes encoding Na+ efflux transporter in various root tissues of maize, paralleled by measurements of tissue Na concentration. In addition, subcellular localization of Na (using Na fluorescent dye) within the leaf mesophyll cells was also performed. Silicon supplied plants accumulate less Na in both root apex and cortex, but allocate more Na+ to the leaves via the xylem. This was accompanied by increased expression of ZrnSOS1 and ZmSOS2 in the root apex and cortex facilitating Na+ exclusion, and in the root stele for enhanced Na+ loading into the xylem. Also, Si down-regulated the expression of ZmHKT1 in the root stele, which further decreased Na+ unloading from the xylem. Consequently, Si increased accumulation of Na in leaves, but also enhances sequestration of Na+ into the vacuoles thereby decreasing Na+ accumulation in the chloroplasts. In response to moderate salt stress in maize, Si shifts the typical glycophyte behavior of this species towards that of halophytes. PB - Pergamon-Elsevier Science Ltd, Oxford T2 - Environmental and Experimental Botany T1 - Silicon mediates sodium transport and partitioning in maize under moderate salt stress EP - 687 SP - 681 VL - 155 DO - 10.1016/j.envexpbot.2018.08.018 ER -
@article{ author = "Bosnić, Predrag and Bosnić, Dragana and Jasnić, Jovana and Nikolić, Miroslav", year = "2018", abstract = "Silicon (Si) is known to alleviate salt stress in various crops; however, the influence of Si on sodium (Na) transport and partitioning at the tissue, cell and organelle levels is poorly understood. Maize (Zea mays L.) hybrid sensitive to salt stress was exposed to moderate salt stress (40 mM NaCl; simulating conditions in salinized agricultural soils) without or with supply of 1.5 mM Si(OH)(4). We investigated the expression of SOS genes encoding Na+ efflux transporter in various root tissues of maize, paralleled by measurements of tissue Na concentration. In addition, subcellular localization of Na (using Na fluorescent dye) within the leaf mesophyll cells was also performed. Silicon supplied plants accumulate less Na in both root apex and cortex, but allocate more Na+ to the leaves via the xylem. This was accompanied by increased expression of ZrnSOS1 and ZmSOS2 in the root apex and cortex facilitating Na+ exclusion, and in the root stele for enhanced Na+ loading into the xylem. Also, Si down-regulated the expression of ZmHKT1 in the root stele, which further decreased Na+ unloading from the xylem. Consequently, Si increased accumulation of Na in leaves, but also enhances sequestration of Na+ into the vacuoles thereby decreasing Na+ accumulation in the chloroplasts. In response to moderate salt stress in maize, Si shifts the typical glycophyte behavior of this species towards that of halophytes.", publisher = "Pergamon-Elsevier Science Ltd, Oxford", journal = "Environmental and Experimental Botany", title = "Silicon mediates sodium transport and partitioning in maize under moderate salt stress", pages = "687-681", volume = "155", doi = "10.1016/j.envexpbot.2018.08.018" }
Bosnić, P., Bosnić, D., Jasnić, J.,& Nikolić, M.. (2018). Silicon mediates sodium transport and partitioning in maize under moderate salt stress. in Environmental and Experimental Botany Pergamon-Elsevier Science Ltd, Oxford., 155, 681-687. https://doi.org/10.1016/j.envexpbot.2018.08.018
Bosnić P, Bosnić D, Jasnić J, Nikolić M. Silicon mediates sodium transport and partitioning in maize under moderate salt stress. in Environmental and Experimental Botany. 2018;155:681-687. doi:10.1016/j.envexpbot.2018.08.018 .
Bosnić, Predrag, Bosnić, Dragana, Jasnić, Jovana, Nikolić, Miroslav, "Silicon mediates sodium transport and partitioning in maize under moderate salt stress" in Environmental and Experimental Botany, 155 (2018):681-687, https://doi.org/10.1016/j.envexpbot.2018.08.018 . .