Table 3.

Changes in membrane lipid unsaturation under salt stress.

Species		Tissue	Tolerance	Membrane	Lipid unsaturationa			Reference
					no/lower NaCl	highest NaCl	change
single	Brassica oleracea	root	tolerant	plasma	137*	171*	↑	(López-Pérez et al., 2009)
	Carthamus tinctorius	root	tolerant	total	85.21*	126.37*	↑	(Harrathi et al., 2012)
	Suaeda salsa	leaf	halophyte	total	126.7*	144.7*	↑	(Sui et al., 2010)
	Triticum aestivum	root	sensitive	plasma	1.9	1.5	↓	(Mansour et al., 1994)
	Glycine max	root	sensitive	plasma	1.04	0.79	↓	(Surjus and Durand, 1996)
pair	Hordeum maritimum	root	tolerant	total	1.30	1.26	→	(Chalbi et al., 2013)
	Hordeum vulgare		sensitive		0.46	1.02	↑
	Thellungiella halophila	leaf	halophyte	total	73.59*	124.79*	↑	(Sui and Han, 2014)
	Arabidopsis thaliana		sensitive		104.03*	51.06*	↓
	Buchloe dactyloides	root	tolerant	plasma	23*	123*	↑	(Lin and Wu, 1996)
			sensitive		–	66*	↑
	Lycopersicon esculentum	callus	tolerant	plasmab	45.5*	32.4*	↓	(Kerkeb et al., 2001)
			sensitive		46.1*	n/a	n/a
	Zea mays	root	tolerant	plasma	0.62	0.24	↓	(Salama et al., 2007)
			sensitive		0.54	0.46	↓
	Brassica napus	root	tolerant	plasma	0.60, 0.65	0.28, 0.22	↓	(Zamani et al., 2010)
			sensitive		0.54-0.55	0.44-0.46	↓

^aUnsaturation to saturation ratio if not labeled; ^bphosphatidylcholine unsaturation; “*”, double bond index; “–”, Not detected; “↑”, increase; “→”, little change; “↓”, decrease.

^bPhosphatidylcholine unsaturation.