caa a22 4500 463159624 CHVBK 20180406164743.0 cr unu---uuuuu 170326e20070301xx s 000 0 eng 10.1007/s10535-007-0021-0 doi (NATIONALLICENCE)springer-10.1007/s10535-007-0021-0 Expression of dehydrins under heat stress and their relationship with water relations of sugarcane leaves [Elektronische Daten] [A. Wahid, T. Close] The heat stress-induced dehydrin proteins (DHNs) expression and their relationship with the water relations of sugarcane (Saccharum officinarum L.) leaves were studied. Sugarcane seedlings were subjected to heat stress (day/night temperature of 40/35 °C) under relative humidity 60/65 % to avoid aerial desiccation and determinations made at 4, 12, 24, 36, 48, 60 and 72 h. The leaves showed a sharp decline in the water and osmotic potentials, and relative water content during first 12 h of heat stress, but a regain in their values in 24 h. The pressure potential (ψp) decreased initially but increased later and approached control leaves. The increase in ψp was tightly correlated to the accumulation of free proline, glycinebetaine and soluble sugars, indicating their possible involvement in the osmotic adjustment under heat stress. Immunological detection revealed the expression of three DHNs with an apparent molecular mass of 21, 23 and 27 kDa under heat stress (48 to 72 h) and their expression was independent of the changes in the water relations of leaves. Institute of Experimental Botany, ASCR, 2007 compatible osmotica nationallicence heat shock proteins nationallicence osmotic adjustment nationallicence relative humidity nationallicence water potential nationallicence DHNs : dehydrin proteins nationallicence FP : free proline nationallicence GB : glycinebetaine nationallicence RWC : relative water content nationallicence SS : water soluble sugars nationallicence ψp : pressure potential nationallicence ψs : osmotic potential nationallicence ψw : water potential nationallicence Wahid A. Department of Botany, University of Agriculture, 38040, Faisalabad, Pakistan aut Close T. Department of Botany and Plant Sciences, University of California, 92521-0124, Riverside, CA, USA aut Biologia Plantarum Springer Netherlands 51/1(2007-03-01), 104-109 0006-3134 51:1<104 2007 51 10535 https://doi.org/10.1007/s10535-007-0021-0 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/s10535-007-0021-0 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Wahid A. Department of Botany, University of Agriculture, 38040, Faisalabad, Pakistan aut NATIONALLICENCE 700 1- Close T. Department of Botany and Plant Sciences, University of California, 92521-0124, Riverside, CA, USA aut NATIONALLICENCE 773 0- Biologia Plantarum Springer Netherlands 51/1(2007-03-01), 104-109 0006-3134 51:1<104 2007 51 10535 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer