Proline accumulation in sugarcane roots subjected to  drought conditions

Vantini, Juliana da Silva; Carlin, Samira Domingues; Gimenez, Daniele Fernanda Jovino; Pérecin, Dilermando; Ferro, Jesus Aparecido; Ferro, Maria Inês Tiraboschi

doi:10.15361/1984-5529.2016v44n4p592-598

Cited by 5 publications

(1 citation statement)

References 19 publications

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“…Apart from their role in osmotic adjustment, compatible solutes are also reported to improve plants' defense system against ROS-induced oxidative damage [64] which consequently improves the capability of plants to withstand stressed environment [65]. Higher proline concentration in Yunzhe 05-51 seems to have osmo-regulatory effect in stressed plants, which might be an evolutionary development to enable them to adapt to hostile environment, as revealed by previous reports on sugarcane [40,66,67] and maize varieties [68,69] in response to moisture deficit. Drought-induced accumulation of osmo-regulators protects cell structure against desiccation and directly contributes to maintain osmotic balance [70,71].…”

Section: Plos Onementioning

confidence: 83%

Drought-induced alterations in photosynthetic, ultrastructural and biochemical traits of contrasting sugarcane genotypes

et al. 2020

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Drought is an important factor which limits growth of sugarcane. To elucidate the physiological and biochemical mechanisms of tolerance, a pot experiment was conducted at Sugarcane Research Institute, Kaiyuan, China. Two genotypes (Yuetang 93-159-sensitive and Yunzhe 05-51-tolerant), were subjected to three treatments; 70±5% (control), 50±5% (moderate drought) and 30±5% (severe drought) of soil field capacity. The results demonstrated that drought induced considerable decline in morpho-physiological, biochemical and anatomical parameters of both genotypes, with more pronounced detrimental effects on Yuetang 93-159 than on Yunzhe 05-51. Yunzhe 05-51 exhibited more tolerance by showing higher dry biomass, photosynthesis and antioxidant enzyme activities. Compared with Yuetang 93-159, Yunzhe 05-51 exhibited higher soluble sugar, soluble protein and proline contents under stress. Yunzhe 05-51 illustrated comparatively well-composed chloroplast structure under drought stress. It is concluded that the tolerance of Yunzhe 05-51 was attributed to improved antioxidant activities, osmolyte accumulation and enhanced photosynthesis. These findings may provide valuable information for future studies on molecular mechanism of tolerance.

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