Selective Transport Capacity for K⁺ and Ca²⁺ over Na⁺ of Leaf Sheath is Correlated with Salt Tolerance of Energy Plant Sweet Sorghum

Abstract:

Two sweet sorghum varieties (salt tolerant Jitianza 2 and salt sensitive Lvneng 1) were used to investigate their adaptation to NaCl stress under different cultivation conditions of potted cultivation and field cultivation, and selective transport capacity for K⁺ over Na⁺, and Ca²⁺ over Na⁺ of leaf sheath. NaCl stress decreased Pn, Fv/Fm, fresh weight of leaf sheath and leaf blade, field yield in both varieties. NaCl stress induced Na⁺ accumulation while it decreased K⁺ and Ca²⁺ levels in leaf sheath and leaf blade of both varieties. The increase in Na⁺ of leaf blade and the decrease in K⁺ and Ca²⁺ of leaf blade were greater in Lvneng 1 than those in Jitianza 2. Furthermore, the Na⁺, K⁺ contents in leaf sheath of Jitianza 2 were significantly higher than those of Lvneng 1 under NaCl stress. The selective transport capacity for K⁺ over Na⁺, and Ca²⁺ over Na⁺ of leaf sheath in Jitianza 2 was significantly greater than that in Lvneng 1. Pn, Fv/Fm, stem stalk field, ear field, juice yield, stalk Brix, sugar content of Jitianza 2 were significantly higher than those of Lvneng 1, which was correlated with stronger selective transport capacity for K⁺ over Na⁺, Ca²⁺ over Na⁺ of Leaf Sheath of Jitianza 2.

• Periodical: Advanced Materials Research (Volume 772)
• Pages: 207-214
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.772.207
• Online since: September 2013
• Authors: Tong Lou Ding, Jie Song, Hai Fan, Hai Dong Wu, Yan Liu, Shi Chao Zhang, Bao Shan Wang
• Keywords: Brix, Leaf Sheath, Salt Tolerance, Selective Transport Capacity, Sugar Content, Sweet Sorghum [Sorghum bicolor (L.) Moench]

References

[1] H. Fan, H.D. Wu, M.L. Zhou, Y. Zhang, T.L. Ding and B.S. Wang. Planting sweet sorghum in Yellow River Delta: the cultivation measure, yield and effect on soil microflora. Advanced Materials Research. 518-523: 81-87. (2012).

DOI: 10.4028/www.scientific.net/amr.518-523.81

[2] R. Munns. Genes and salt tolerance: bringing them together. New Phytol. 167: 645–663. (2005).

DOI: 10.1111/j.1469-8137.2005.01487.x

[3] A. Almodares and M.R. Hadi. Production of bioethanol from sweet sorghum: A review. African Journal of Agricultural Research. 4(9): 772-780. (2009).

[4] M. Kim and D.F. Day. Composition of sugar cane, energy cane, and sweet sorghum suitable for ethanol production at Louisiana sugar mills. Journal of industrial microbiology and biotechnology. 38: 803-807. (2011).

DOI: 10.1007/s10295-010-0812-8

[5] M.A. Botella, V. Martinez, J. Pardines, A. Cerdá. Salinity induced potassium deficiency in maize plants. Journal of Plant Physiology. 150: 200-205. (1997).

DOI: 10.1016/s0176-1617(97)80203-9

[6] H. Greenway, R. Munns. Mechanism of salt tolerance in nonhalophytes. Annual Review of Plant Physiology. 31: 140-190. (1980).

DOI: 10.1146/annurev.pp.31.060180.001053

[7] B.S. Wang, R. Ratajczak, J.H. Zhang. Activity, amount and subunit composition of vacuolar-type H+-ATPase and H+-PPase in wheat roots under severe NaCl stress. Journal of Plant Physiology. 157: 109-116. (2000).

DOI: 10.1016/s0176-1617(00)80143-1

[8] D. Golldack, F. Quigley, C.B. Michalowski, U.R. Kamasani, H.J. Bohnert. Salinity stress-tolerant and -sensitive rice (Oryza sativa L. ) regulate AKT1-type potassium channel transcripts differently. Plant Molecular Biology. 51: 71-81. (2003).

DOI: 10.1023/a:1020763218045

[9] J.K. Zhu, J.P. Liu, L.M. Xiong. Genetic analysis of salt tolerance in Arabidopsis: evidence for a critical role of potassium nutrition. Plant Cell. 10: 1181-1191. (1998).

DOI: 10.1105/tpc.10.7.1181

[10] B.S. Wang, K.F. Zhao. Comparison of extractive methods of Na and K in wheat leaves. Plant Physiol Commun. 31(1): 50-52. (1995).

[11] S.M. Wang, T.X. Chen, J.L. Zhang. Regulation of 6-benzylam inopurine (BA) and abscisic acid (ABA) on selectivity for Na+ over K+ and the distribution of free praline in Echinochloa frumentacea. Acta Bot Borea Occident Sin. 24(4): 588-595. (2004).

[12] M.F. McKenna, G. Houle. Why are annual plants rarely spring ephemerals? New Phytologist. 148: 295-302. (2000).

DOI: 10.1046/j.1469-8137.2000.00756.x

[13] R. Davenport, R.A. James, A. Zakrisson-Plogander, M. Tester, R. Munns. Control of sodium transport in durum wheat. Plant Physiology. 137: 807–818. (2005).

DOI: 10.1104/pp.104.057307

[14] R.A. James, A.R. Rivelli, R. Munns, S.V. Caemmerer. Factors affecting CO2 assimilation, leaf injury and growth in salts stressed durum wheat. Functional Plant Biology. 29: 1393–1403. (2002).

DOI: 10.1071/fp02069

[15] M. Tester, R. Davenport. Na+ tolerance and Na+ transport in higher plants. Annalsof Botany. 93: 503-527. (2003).

DOI: 10.1093/aob/mcg058

[16] C.X. Huang, R.F. van Steveninck. Maintenance of low Cl- concentrations in mesophyll cells of leaf blades of barley seedlings exposed to salt stress. Plant Physiol. 90: 1440-1443. (1989).

DOI: 10.1104/pp.90.4.1440

[17] T.L. Ding, P. Duan, B.S. Wang. Na+/K+ selectivity of leaf sheath in wheat cultivars differing in salt tolerance. Journal of Plant Physiology and Molecular Biology. 32(1): 123-126. (2006).