Expression profiling of the genes induced by Na2CO3 and NaCl stresses in leaves and roots of Leymus chinensis

Deciphering the possible mechanism of exogenous NO alleviating alkali stress on cucumber leaves by transcriptomic analysis

“…It has been reported that the genes associated with photosynthesis are significantly down-regulated in Na 2 CO 3 stressed leaves of L. chinensis (Jin et al, 2008), and that the up-regulation of photosynthesis genes contribute to the recovery of photosynthetic ability in the halophyte, Burma mangrove (Miyama and Tada, 2008). In the present study, SNP treatment significantly increased net photosynthesis rate and Fv/Fm of cucumber leaves under alkali stress.…”

“…There are 831 million ha of soils affected by excessive salinity and alkalinity around the world. Of those, 434 million ha are sodic soils (alkaline soils) and 397 million ha are saline soils (Jin et al, 2008). It is well known that soil salinity is mainly due to the accumulation of NaCl and Na 2 SO 4 , while soil alkalinity is mainly caused by the accumulation of NaHCO 3 and Na 2 CO 3 (Shi and Sheng, 2005;Yang et al, 2009).…”

“…The mechanism of higher plant tolerance to salinity stress has been widely studied. However, the mechanism of adaptation to alkalinity in plants is in need of deeper investigation (Jin et al, 2008). Osmotic stress and ion-induced injury are generally considered to be involved in salt stress of plants, while there is the additional influence of high-pH on plants under alkaline conditions .…”

“…Jin et al (2008) examined the response of gene expression profiles in Leymus chinensis to Na 2 CO 3 and NaCl stresses. They identified many genes regulated by the two stresses, while only 37 genes in the leaves and 6 genes in the roots showed the same expression change patterns between Na 2 CO 3 and NaCl stresses.…”

Somatic embryogenesis and in vitro plant regeneration from various explants of the halophyte Leymus chinensis (Trin.)

“…Under the pressure of environmental stress and grassland degradation caused by men and animals (Zhang et al 2002), its low sexual reproductivity and relatively drought-sensitivity (Bai et al 2004), the great demands for physiological traits of L. chinensis require more rapid improvement of this grass. To improve traits of this grass, several investigations have been conducted (Wang 1998), including expression profiling of the salt-related genes (Jin et al 2008), nitrous oxide (N 2 O) emission from and methane (CH 4 ) uptake under environmental stresses (Wang et al 2005), effect of soil moisture on gas exchange and in vitro tissue culture (Liu et al 2004, Kim et al 2005. Until now, the phosphinothricin acetyltransferase (PAT) gene has been transformed to L. chinensis through microprojectile bombardment (Shu et al 2005).…”