Osmoregulators’ accumulation minimizes the effects of drought stress in sugarcane and contributes to the recovery of photochemical efficiency in photosystem II after rewatering

Júnior, Sebastião de Oliveira Maia; Andrade, Jailma Ribeiro de; Santos, Claudiana Moura dos; Silva, André Lucas Januário; Endres, Laurício; Silva, José Vieira; Silva, Lennon Klédson dos Santos

doi:10.1007/s11738-020-03050-y

Cited by 12 publications

(4 citation statements)

References 48 publications

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“…Similar beneficial effects of reduced water supply on WUE has been extensively reported in literature for tomato [16,17,21]. However, if a large literature exists about the effects of rewatering on plant physiology in many plants [22][23][24], including tomato [25,26], no information is available on its effects upon the nutritional aspects of the product.…”

Section: Discussionsupporting

confidence: 58%

Fruit Yield, Polyphenols, and Carotenoids in Long Shelf-Life Tomatoes in Response to Drought Stress and Rewatering

et al. 2021

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The Mediterranean long shelf-life tomato (or long storage tomato) is a plant traditionally cultivated under no irrigation in the Southern regions of Italy, whose fruits have typical high sensory and nutritional quality. However, yield levels are kept low under current cultivation conditions. In this study, the effects of repeated cycles of drying and rehydration on crop productivity and nutritional quality of fruits in terms of polyphenols and carotenoids content were assessed in long shelf-life tomatoes cultivated in a typical semi-arid area of Southern Italy. The three local Sicilian landraces ‘Custonaci’, ‘Salina’ and ‘Vulcano’, and the commercial tomato hybrid ‘Faino’ (control) were submitted to three irrigation treatments: DRY (no irrigation); IRR (long-season full irrigation); REW (drought/rewatering cycles). Total 450, 4710, and 1849 m3 ha−1, were distributed in DRY, IRR, and REW, respectively. At harvest, fruit yield, polyphenols (as total, flavonoids, and hydroxycinnamoyl quinic acids-HCQA), and carotenoids contents (lycopene and β-carotene) were measured. All cultivars benefitted from very limited irrigation in REW, raising their productivity (up to +147% in ‘Vulcano’) with respect to that of plants overstressed in DRY. Irrigation water use efficiency in REW was higher than that in IRR. Water shortage in REW led to a polyphenols content of fruits that was slightly lower (171.1 μg g−1) than that in DRY, but higher than that in IRR (116.8 μg g−1). All local landraces had greater contents (>160 μg g−1) than control (113.0 μg g−1). Under REW and DRY, the two landraces ‘Salina’ and ‘Vulcano’ produced fruits with the same polyphenols and flavonoids contents. Overall, the two water stressed treatments (DRY and REW) did not differ for HCQA content (>66 μg g−1), which was significantly higher than that in the irrigated plots (<50.55 μg g−1). Lycopene content in DRY and REW exceeded 100 μg g−1; among local types, ‘Vulcano’ exhibited the highest content (106.7 μg g−1). The β-carotene content did not change in ‘Custonaci’ and ‘Salina’, whereas in ‘Vulcano’ it was greater in DRY and REW. Only in ‘Faino’ water limitation in REW exerted a clear promoting effect of on β-carotene content of fruits. The results of the present study reveal how rewatering after long-lasting drought periods is beneficial to long shelf-life tomatoes in terms of productivity. Appropriate drought cycles in REW may also help the fruits to retain high nutritional levels.

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Section: Discussionsupporting

confidence: 58%

Fruit Yield, Polyphenols, and Carotenoids in Long Shelf-Life Tomatoes in Response to Drought Stress and Rewatering

et al. 2021

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“…In contrast, the rewatered Pandanus showed reduced REL. In sugarcane, an increase of 62% REL was found in the drought-stressed samples compared to control [22] but reduced after rewatering [23]. Similarly, Oraee and Tefranifar found that drought treatment increased the REL in pansy plants, while the REL in the rewatered drought-stressed pansy was reduced [24].…”

Section: Drought Stress Affected the Growth And Antioxidant Enzyme Ac...mentioning

confidence: 84%

Drought Stress Induces Morpho-Physiological and Proteome Changes of Pandanus amaryllifolius

Amnan

Aizat

Khaidizar

et al. 2022

Plants

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Drought is one of the significant threats to the agricultural sector. However, there is limited knowledge on plant response to drought stress and post-drought recovery. Pandanus amaryllifolius, a moderate drought-tolerant plant, is well-known for its ability to survive in low-level soil moisture conditions. Understanding the molecular regulation of drought stress signaling in this plant could help guide the rational design of crop plants to counter this environmental challenge. This study aimed to determine the morpho-physiological, biochemical, and protein changes of P. amaryllifolius in response to drought stress and during recovery. Drought significantly reduced the leaf relative water content and chlorophyll content of P. amaryllifolius. In contrast, relative electrolyte leakage, proline and malondialdehyde contents, and the activities of antioxidant enzymes in the drought-treated and recovered samples were relatively higher than the well-watered sample. The protein changes between drought-stressed, well-watered, and recovered plants were evaluated using tandem mass tags (TMT)-based quantitative proteomics. Of the 1415 differentially abundant proteins, 74 were significantly altered. The majority of proteins differing between them were related to carbon metabolism, photosynthesis, stress response, and antioxidant activity. This is the first study that reports the protein changes in response to drought stress in Pandanus. The data generated provide an insight into the drought-responsive mechanisms in P. amaryllifolius.

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“…Osmolytes such as proline are small organic molecules that have low toxicity at high concentrations and protect membrane integrity by inducing osmotic balance between cells and the cytosol (Abbas et al, 2014; de Oliveira Maia Júnior et al, 2020). When plants were subjected to water deficit stress, proline accumulation was very low in all the non‐stress plants (Day 0) but increased to significantly ( p ≤ .05, LSD) higher levels in the mutant compared with the WT parental plants under moderate stress (Day 14 ww: average 1.49 ± 0.79 and 0.50 ± 0.33, respectively).…”

Section: Resultsmentioning

confidence: 99%

“…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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Osmoregulators’ accumulation minimizes the effects of drought stress in sugarcane and contributes to the recovery of photochemical efficiency in photosystem II after rewatering

Cited by 12 publications

References 48 publications

Fruit Yield, Polyphenols, and Carotenoids in Long Shelf-Life Tomatoes in Response to Drought Stress and Rewatering

Fruit Yield, Polyphenols, and Carotenoids in Long Shelf-Life Tomatoes in Response to Drought Stress and Rewatering

Drought Stress Induces Morpho-Physiological and Proteome Changes of Pandanus amaryllifolius

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

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