Impact on Proline Content of Sugarcane (Saccharum officinarum L.) under Salinity Stress

Abstract

For sustainable production of sugarcane, healthy and more acclimatized plants should be developed that can easily cope up all the environmental barriers of biotic and abiotic stress. Soil salinization is one of these kinds of stress that limits the productivity of crops worldwide. We have investigated the proline content of plant under normal and two different levels of salt irrigation water (ECiw10dSm -1 and ECiw 20 dSm -1 ) consecutively for two years of crop production in 2015-16 and 2016-17. Ten sugarcane varieties (Co 0118, Co 0238, Co 5011, CoLk 99270, CoS 8279, CoSe 8457, Co 5009, CoS 7250, CoPant 97222, Co 98014) were planted in the replicate of three under complete randomized design. Salt treatments were given at formative stage and the tests were performed at grand growth stage of plant life cycle. Effect of salinity can be seen on other phenotypic factors of plant also in correlation with proline. On exposure to salt stress, tolerant varieties CoPant 97222, CoS 7250, Co 98014 were found to accumulate more proline than to varieties Co 0238, CoSe 8457 and Co 0118, while CoS 8279, Co 5011 and Co 5009 show moderate behavior.

In vitro and in vivo screening for the identification of salt-tolerant sugarcane (Saccharum officinarum L.) clones: molecular, biochemical, and physiological responses to salt stress

“…Similar results have been observed in an oil seed crop by Ghane et al (2014) . Moreover, sugarcane varieties that are more salt-tolerant than unselected varieties are frequently associated with elevated concentrations of proline ( Gandonou et al, 2005 , Singh and Senger, 2020b , Rao et al, 2021 ). However, in the present study, the effect of salt stress on the root proline accumulation remained non-significant across the examined sugarcane plants.…”

Combined effect of salinity and hypoxia in seedlings of two varieties of Panicum coloratum: Morphology, root system architecture, oxidative damage and antioxidant response

“…Proline, an important osmoprotectant molecule, and also an effective quencher of ROS (Gill & Tuteja, 2010), is produced in response to osmotic stress and ion storage to enhance osmotic adjustments and allow turgor maintenance of cells (Munns, 2005;Szabados & Savouré, 2010). Proline is also classified as osmolyte or compatible solute and its accumulation was reported to increase in genotypes of sugarcane and cowpea in response to salinity (Ashraf, 2004;Singh & Sengar, 2020). Also, in P. coloratum, proline increments were measured in both var.…”

Seed priming of stored seeds on seed germination, vegetative performance, flowering, and proline content in chili under water stress condition

“…Increased proline content may function as osmoregulatory and osmo-protective chemicals. Furthermore, [38] also reported that a higher proline accumulation may protect the seeds from osmotic damage. The interaction effect of the proline content of plants under regular watering in this study may be due to a stress signal of transplanted seedlings after transplanting into a polybag as an adaptive response that triggered proline accumulation [40,41].…”