Gene Expression Profiling in Sugarcane Genotypes During Drought Stress and Rehydration

Devi, K.; Prathima, P. T.; Gomathi, R.; Manimekalai, R.; Lakshmi, K. Jhansi; Selvi, A.

doi:10.1007/s12355-018-0687-y

Cited by 21 publications

(17 citation statements)

References 63 publications

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“…In normal canes, Solomon et al (1990) showed that there was increase in both sorts of invertases (acidic and neutral) after 72 h of cane storage along with increasing invert sugars. Devi et al (2019) had revealed that over expression of invertase and calmodulin functional proteins occurs in water stress condition as well as in recovery stage.…”

Section: Resultsmentioning

confidence: 99%

Minimization of post-harvest sucrose losses in drought affected sugarcane using chemical formulation

Misra

Solomon

Abd_Allah

et al. 2020

Saudi Journal of Biological Sciences

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Sugarcane is a significant crop for production of sugar and ethanol in the world. In present perspective, drought is one of the frequently occurring abiotic stresses hampering the productivity of sugarcane causing heavy losses in sugar recovery. Post-harvest sugarcane deterioration attains more importance. Measures have been recommended in harvested canes to prevent these losses in general and under drought conditions but application of chemical formulation has not yet been tested over drought effected ones. Thus, we tried to investigate the efficacy of chemical formulation [Benzalkonium chloride (BKC) + Sodium metasilicate (SMS)] on sucrose losses occurring in harvested canes grown under drought and normal conditions. Results showed that application of chemical formulation had higher effect on drought canes in comparison to normal grown canes. Loss in cane weight was reduced to 8.25% and 11% in drought treated and normal treated grown canes, respectively, after 240 h of harvest in comparison to their respective control. In sucrose content and Commercial cane sugars %, drought treated canes showed an effect of BKC + SMS by reducing the losses to 1.26 units and 1.42 units, respectively, whereas in normal ones, reduction was of 0.38 units and 0.10 units, respectively. Biochemical analysis revealed that in reducing sugars, reduction in increase were of 44.51% and 25.50% in drought and normal grown canes, respectively, after 240 h of harvest. Dextran and soluble acid invertase estimations revealed that after application of BKC + SMS, reduction of dextran and invertase activity were of 49.74%, 66.84%, respectively, and 33.92%, 42.75%, respectively, in drought and normal grown canes, respectively. Total microbial load, showed effectiveness of 25.01% in drought grown canes while 14.41% in normal grown ones after 240 h of harvest. Our study was planned to use the anti-bacterial efficiency of both the chemicals over harvested canes so that the major sucrose losses occurring due to microbial deterioration could be inhibited. The use of this chemical formulation proves to be an effective one over post-harvest sucrose losses, particularly in drought grown canes.

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Section: Resultsmentioning

confidence: 99%

Minimization of post-harvest sucrose losses in drought affected sugarcane using chemical formulation

Misra

Solomon

Abd_Allah

et al. 2020

Saudi Journal of Biological Sciences

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“…Transcriptome data revealed that an increase of ABA content activated expression of many drought-resistant genes [46]. ABA regulated downstream response of RD29B (dehydration stress gene) by regulating the bZIP gene [47].…”

Section: Changes In Phytohormones and Subsequent Effects In White Clomentioning

confidence: 99%

Indole-3-acetic acid improves drought tolerance of white clover via activating auxin, abscisic acid and jasmonic acid related genes and inhibiting senescence genes

Zhang

Hassan

et al. 2020

BMC Plant Biol

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Background: Auxin may have a positive effect on plants under drought stress. White clover is widely cultivated and often prone to water shortages. In the present study, we investigated the effects of exogenous indole − 3acetic acid (IAA) on growth and physiological changes of white clover under drought stress condition. The contents of endogenous IAA and other hormones including ABA, CTK, JA, GA, IAA, and SA were assayed. Moreover, expressions of auxin-responsive genes, drought-responsive genes and leaf senescence-associated genes were detected in response to exogenous IAA. Results: Compared to control, drought stress alone significantly diminished stem dry weigh, relative water content (RWC) and total chlorophyll content (Chl). Exogenous IAA treatment significantly increased RWC and Chl, whereas L-AOPP treatment drastically decreased stem dry weight, RWC and Chl under drought stress condition. Additionally, exogenous IAA treatment significantly increased ABA content and JA content, up-regulated expression of auxin responsive genes (GH3.1, GH3.9, IAA8), drought stress responsive genes (bZIP11, DREB2, MYB14, MYB48, WRKY2, WRKY56, WRKY108715 and RD22), and down-regulated expressions of auxin-responding genes (GH3.3, GH3.6, IAA27) and leaf senescence genes (SAG101 and SAG102) in the presence of PEG. Contrarily, L-AOPP treatment significantly reduced contents of ABA, GA3 and JA, down-regulated expressions of GH3.1, GH3.9, IAA8, bZIP11, DREB2, MYB14, MYB48, WRKY2, WRKY56, WRKY108715, ERD and RD22, and up-regulated SAG101 and SAG102. Conclusions: Exogenous IAA improved drought tolerance of white clover possibly due to endogenous plant hormone concentration changes and modulation of genes involving in drought stress response and leaf senescence. These results provided useful information to understand mechanisms of IAA improved drought tolerance in white clover.

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“…A similar phenomenon occurs when wheat is under drought stress; SOD, APX, GR, and CAT systems are up-regulated, causing the plants to adapt to drought 47 . Previous studies on sugarcane postulate that accumulation of antioxidant enzymes is a measure of its capability to self-protect against oxidative stress 33 , 48 . At WS-9, SOD and APX were still relatively high and continued to produce excessive ROS in the cells as the major drought resisting enzyme.…”

Section: Discussionmentioning

confidence: 99%

Physiological changes and transcriptome profiling in Saccharum spontaneum L. leaf under water stress and re-watering conditions

Wang

Qian

et al. 2021

Sci Rep

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As the polyploidy progenitor of modern sugarcane, Saccharum spontaneum is considered to be a valuable resistance source to various biotic and abiotic stresses. However, little has been reported on the mechanism of drought tolerance in S. spontaneum. Herein, the physiological changes of S. spontaneum GXS87-16 at three water-deficit levels (mild, moderate, and severe) and after re-watering during the elongation stage were investigated. RNA sequencing was utilized for global transcriptome profiling of GXS87-16 under severe drought and re-watered conditions. There were significant alterations in the physiological parameters of GXS87-16 in response to drought stress and then recovered differently after re-watering. A total of 1569 differentially expressed genes (DEGs) associated with water stress and re-watering were identified. Notably, the majority of the DEGs were induced by stress. GO functional annotations and KEGG pathway analysis assigned the DEGs to 47 GO categories and 93 pathway categories. The pathway categories were involved in various processes, such as RNA transport, mRNA surveillance, plant hormone signal transduction, and plant-pathogen interaction. The reliability of the RNA-seq results was confirmed by qRT-PCR. This study shed light on the regulatory processes of drought tolerance in S. spontaneum and identifies useful genes for genetic improvement of drought tolerance in sugarcane.

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Gene Expression Profiling in Sugarcane Genotypes During Drought Stress and Rehydration

Cited by 21 publications

References 63 publications

Minimization of post-harvest sucrose losses in drought affected sugarcane using chemical formulation

Minimization of post-harvest sucrose losses in drought affected sugarcane using chemical formulation

Indole-3-acetic acid improves drought tolerance of white clover via activating auxin, abscisic acid and jasmonic acid related genes and inhibiting senescence genes

Physiological changes and transcriptome profiling in Saccharum spontaneum L. leaf under water stress and re-watering conditions

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