Drought Tolerance: Breeding Efforts in Sugarcane

Mall, A. K.; Misra, Varucha; Singh, B. D.; Kumar, Mukesh; Pathak, A. D.

doi:10.1007/978-981-15-0025-1_10

Cited by 8 publications

(3 citation statements)

References 78 publications

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“…Therefore, it is critically important to develop effective management practices to alleviate the negative impacts of drought stress on sugarcane growth and development (Fahad et al, 2017). Genetic breeding has sought to obtain new cultivars more resistant to drought (Mall et al, 2020); however, the establishment of management practices that increase the mitigation of environmental stresses is necessary.…”

Section: Introductionmentioning

confidence: 99%

Trichoderma asperellum Inoculation as a Tool for Attenuating Drought Stress in Sugarcane

et al. 2021

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Drought stress is an important concern worldwide which reduces crop yield and quality. To alleviate this problem, Trichoderma asperellum has been used as a plant growth-promoting fungus capable of inducing plant tolerance to biotic and abiotic stresses. Here, we examined the effect of T. asperellum inoculation on sugarcane plant above and belowground development under drought stress and investigated the role of this fungus on inducing tolerance to drought at physiological and biochemical levels. The experiment was performed in pots under greenhouse conditions, with four treatments and four replicates. The treatments consisted of sugarcane plants inoculated or not with T. asperellum and grown under drought stress and adequate water availability. Drought-stressed sugarcane plants inoculated with T. asperellum changed the crop nutrition and chlorophyll and carotenoid concentrations, resulting in increased photosynthesis rate, stomatal conductance, and water use efficiency compared to the non-inoculated plants. In addition, the antioxidant metabolism also changed, increasing the superoxide dismutase and peroxidase enzyme activities, as well as the proline concentration and sugar portioning. These cascade effects enhanced the root and stalk development, demonstrating that T. asperellum inoculation is an important tool in alleviating the negative effects of drought stress in sugarcane. Future studies should be performed to elucidate if T. asperellum should be reapplied to the sugarcane ratoons.

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Section: Introductionmentioning

confidence: 99%

Trichoderma asperellum Inoculation as a Tool for Attenuating Drought Stress in Sugarcane

et al. 2021

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“…Drought resilience is an increasingly important and desirable trait, especially due to the devastating effects of climate change 22 . The response of plants to drought is well described in a wide range of species 23 , 24 .…”

Section: Discussionmentioning

confidence: 99%

The effect of combined drought and trace metal elements stress on the physiological response of three Miscanthus hybrids

Krzyżak

Rusinowski

Sitko

et al. 2023

Sci Rep

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Drought is a serious threat worldwide and has a significant impact on agricultural production and soil health. It can pose an even greater threat when it involves land contaminated with trace metal element (TMEs). To prevent desertification, such land should be properly managed and growing Miscanthus for energy or raw material purposes could be a solution. The effects of drought and TMEs were studied in a pot experiment on three different Miscanthus hybrids (conventional Miscanthus × giganteus, TV1 and GNT10) considering growth parameters, photosynthetic parameters and elemental composition of roots, rhizomes and shoots. GNT10 was characterised by the weakest gas exchange among the hybrids, which was compensated by the highest number of leaves and biomass. The strongest correlations between the studied parameters were found for TV1, which might indicate a high sensitivity to TME stress. For M × g and GNT10, the main mechanisms for coping with stress seem to be biomass management through number of shoots and leaves and gas exchange. The main factor determining the extent of accumulation of TMEs was the amount of water applied in the experimental treatment, which was related to the location of the plant in the aniso-isohydric continuum. GNT10 was the most resistant plant to combined stress, while it responded similarly to TV1 when drought and trace metal elements were applied separately.

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“…Because drought in sugarcane involves the response of multiple genes, the breeding of drought-tolerant genotypes is a highly complex process that remains a major challenge to researchers and/or farmers (Dlamini, 2021;Ferreira et al, 2017;Mall et al, 2022). Breeding for this trait using conventional breeding and transformation technology has resulted in some successes (Mall et al, 2020;Meena et al, 2020;Zhou, 2013). However, the complexity of the sugarcane genome (D'Hont et al, 1998;Garsmeur et al, 2018;Zhang et al, 2018), the challenges linked to identifying traits linked to drought tolerance in commercial varieties of this crop, and negative public acceptance of transgenic technology remains a challenge.…”

Section: Introductionmentioning

confidence: 99%

Characterisation of an ethyl methanesulfonate‐derived drought‐tolerant sugarcane mutant line

Masoabi

Snyman

Vyver

2023

Annals of Applied Biology

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Sustainable sugarcane production in areas prone to frequent and severe drought can be achieved by creating resilient sugarcane varieties. In this study, a unique mutant line, M9.2, was generated from a drought susceptible commercial sugarcane cultivar, N19, through the exposure of callus cells to the ethyl methanesulfonate mutagen and subsequent in vitro osmotic selection on polyethylene glycol. The study aimed to characterise the M9.2 mutant, in comparison with the parental genotype, in terms of its physiological and biochemical performance and proteome profile when exposed to moderate (14 days without water) and severe (21 days without water) water deficit stress in glasshouse pot trials. In comparison to the parental counterparts, the mutant plants were able to sustain the quantum efficiency of photosystem II (Fv/Fm) throughout the stress. Under mild stress, the mutant plants displayed elevated stomatal conductance, high concentrations of proline, accumulated less H2O2 and phenotypically displayed limited wilting and no visible signs of leaf senescence. Under severe stress, the mutant plants accumulated less malondialdehyde and more antioxidant enzymes (superoxide dismutase and catalase) than the parental line. Differential protein expression was also observed according to two‐dimensional difference gel electrophoresis patterns of proteins expressed in the M9.2 mutant versus the parental plants during moderate stress. Analysis revealed proteins related to photosynthesis (pyruvate orthophosphate dikinase, un‐fragmented ribulose‐1,5‐bisphosphate carboxylase/oxygenase large subunit and chlorophyll a/b‐binding protein 3) and carbohydrate metabolism (sucrose synthase) were up‐regulated in the mutant. Differentially expressed proteins were further linked to energy metabolism, methylation homeostasis and DNA repair. This study characterises the new M9.2 mutant with beneficial drought‐tolerant traits which have the potential to be exploited in future sugarcane breeding programmes.

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Drought Tolerance: Breeding Efforts in Sugarcane

Cited by 8 publications

References 78 publications

Trichoderma asperellum Inoculation as a Tool for Attenuating Drought Stress in Sugarcane

Trichoderma asperellum Inoculation as a Tool for Attenuating Drought Stress in Sugarcane

The effect of combined drought and trace metal elements stress on the physiological response of three Miscanthus hybrids

Characterisation of an ethyl methanesulfonate‐derived drought‐tolerant sugarcane mutant line

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