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Enhanced Salt Tolerance under Nitrate Nutrition is Associated with Apoplast Na+ Content in Canola (Brassica. napus L.) and Rice (Oryza sativa L.) Plants.
Plant Cell Physiol. 2016 Nov; 57(11):2323-2333.PC

Abstract

To analyze the effect of nitrogen form on salt stress, we studied the response of two different plant species, canola (Brassica napus L.), a dicotyledon which prefers NO3- nutrition, and rice (Oryza sativa L.), a monocotyledon which prefers NH4+ nutrition, to salt stress under NO3- (NN) and NH4+ (AN) nutrition. Salt stress was simulated by the addition of 150 and 100 mM NaCl to NN (NNS) and AN (ANS) in canola and rice seedlings, respectively. Salt stress induced reductions of shoot and root biomass that were more drastic under ANS. A higher Na+ content was obtained in NNS than in ANS. The impact of Na+ on the reduction of biomass (Δbiomass/Na+) was 162, 181, 230 and 245% higher in canola root, canola shoot, rice root and rice shoot in ANS than in NNS, respectively. In both canola and rice seedlings, the ratio of leaf Na+ content in apoplasts to symplasts ([Na+]apo/[Na+]sym) was higher in NNS than in ANS. Also, in canola seedlings, the ratio of apoplast Na+ in the leaf edge to the leaf center ([Na+]LE/[Na+]LC) was 18 times higher in NNS than in ANS. Our results illustrate that the confinement of Na+ in the canola leaf edge, as well as the restriction of Na+ in leaf apoplasts of canola and rice seedlings, protect cells from suffering Na+ stress and contribute to the higher tolerance of NO3--fed plants.

Authors+Show Affiliations

Gao L
Jiangsu Key Lab for Organic Waste Utilization and National Engineering Research Centre for Organic-based Fertilizers, Nanjing Agricultural University, Nanjing, 210095, China.
Liu M
Jiangsu Key Lab for Organic Waste Utilization and National Engineering Research Centre for Organic-based Fertilizers, Nanjing Agricultural University, Nanjing, 210095, China.
Wang M
Jiangsu Key Lab for Organic Waste Utilization and National Engineering Research Centre for Organic-based Fertilizers, Nanjing Agricultural University, Nanjing, 210095, China.
Shen Q
Jiangsu Key Lab for Organic Waste Utilization and National Engineering Research Centre for Organic-based Fertilizers, Nanjing Agricultural University, Nanjing, 210095, China.
Guo S
Jiangsu Key Lab for Organic Waste Utilization and National Engineering Research Centre for Organic-based Fertilizers, Nanjing Agricultural University, Nanjing, 210095, China sguo@njau.edu.cn.

MeSH

BiomassBrassica napusGasesNitratesNitrogenOryzaPhotosynthesisPlant DevelopmentPlant LeavesPlant RootsPlant ShootsPlant StomataSalt ToleranceSeedlingsSodiumSodium ChlorideStress, Physiological

Pub Type(s)

Journal Article

Language

eng

PubMed ID

27519313

Citation

Gao, Limin, et al. "Enhanced Salt Tolerance Under Nitrate Nutrition Is Associated With Apoplast Na+ Content in Canola (Brassica. Napus L.) and Rice (Oryza Sativa L.) Plants." Plant & Cell Physiology, vol. 57, no. 11, 2016, pp. 2323-2333.
Gao L, Liu M, Wang M, et al. Enhanced Salt Tolerance under Nitrate Nutrition is Associated with Apoplast Na+ Content in Canola (Brassica. napus L.) and Rice (Oryza sativa L.) Plants. Plant Cell Physiol. 2016;57(11):2323-2333.
Gao, L., Liu, M., Wang, M., Shen, Q., & Guo, S. (2016). Enhanced Salt Tolerance under Nitrate Nutrition is Associated with Apoplast Na+ Content in Canola (Brassica. napus L.) and Rice (Oryza sativa L.) Plants. Plant & Cell Physiology, 57(11), 2323-2333.
Gao L, et al. Enhanced Salt Tolerance Under Nitrate Nutrition Is Associated With Apoplast Na+ Content in Canola (Brassica. Napus L.) and Rice (Oryza Sativa L.) Plants. Plant Cell Physiol. 2016;57(11):2323-2333. PubMed PMID: 27519313.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Enhanced Salt Tolerance under Nitrate Nutrition is Associated with Apoplast Na+ Content in Canola (Brassica. napus L.) and Rice (Oryza sativa L.) Plants. AU - Gao,Limin, AU - Liu,Mei, AU - Wang,Min, AU - Shen,Qirong, AU - Guo,Shiwei, Y1 - 2016/08/12/ PY - 2016/05/11/received PY - 2016/08/04/accepted PY - 2016/8/16/pubmed PY - 2017/3/28/medline PY - 2016/8/14/entrez KW - Apoplast KW - NH4+ KW - NO3– KW - Salt stress KW - Symplast SP - 2323 EP - 2333 JF - Plant & cell physiology JO - Plant Cell Physiol VL - 57 IS - 11 N2 - To analyze the effect of nitrogen form on salt stress, we studied the response of two different plant species, canola (Brassica napus L.), a dicotyledon which prefers NO3- nutrition, and rice (Oryza sativa L.), a monocotyledon which prefers NH4+ nutrition, to salt stress under NO3- (NN) and NH4+ (AN) nutrition. Salt stress was simulated by the addition of 150 and 100 mM NaCl to NN (NNS) and AN (ANS) in canola and rice seedlings, respectively. Salt stress induced reductions of shoot and root biomass that were more drastic under ANS. A higher Na+ content was obtained in NNS than in ANS. The impact of Na+ on the reduction of biomass (Δbiomass/Na+) was 162, 181, 230 and 245% higher in canola root, canola shoot, rice root and rice shoot in ANS than in NNS, respectively. In both canola and rice seedlings, the ratio of leaf Na+ content in apoplasts to symplasts ([Na+]apo/[Na+]sym) was higher in NNS than in ANS. Also, in canola seedlings, the ratio of apoplast Na+ in the leaf edge to the leaf center ([Na+]LE/[Na+]LC) was 18 times higher in NNS than in ANS. Our results illustrate that the confinement of Na+ in the canola leaf edge, as well as the restriction of Na+ in leaf apoplasts of canola and rice seedlings, protect cells from suffering Na+ stress and contribute to the higher tolerance of NO3--fed plants. SN - 1471-9053 UR - https://www.unboundmedicine.com/medline/citation/27519313/Enhanced_Salt_Tolerance_under_Nitrate_Nutrition_is_Associated_with_Apoplast_Na+_Content_in_Canola__Brassica__napus_L___and_Rice__Oryza_sativa_L___Plants_ DB - PRIME DP - Unbound Medicine ER -