Sugarcane Under Pressure: An Overview of Biochemical and Physiological Studies of Abiotic Stress

Azevedo, Ricardo Antunes; Carvalho, Rogério Falleiros; Cicarelli, Mariana; Gratão, Priscila Lupino

doi:10.1007/s12042-011-9067-4

Cited by 83 publications

(49 citation statements)

References 90 publications

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“…Sugarcane (Saccharum officinarum L.) culture is extremely important in tropical countries (Azevedo et al, 2011). Its expansion in Brazil has been driven by the growing worldwide demand for biofuels (Endres et al, 2010).…”

Section: Introductionmentioning

confidence: 99%

Differential gene expression in drought-tolerant sugarcane roots

et al. 2015

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ABSTRACT. Drought is one of the most frequent abiotic stresses limiting the productivity and geographical distribution of sugarcane culture. The use of drought-tolerant genotypes is one approach for overcoming the effects of water stress. We conducted a comparative study to identify gene expression profiles under water stress in tolerant sugarcane roots. Two different cultivars, 1 drought tolerant (RB867515) and 1 drought susceptible (SP86-155), were evaluated at 4 sampling time points (1, 3, 5, and 10 days) using the cDNA-amplified fragment length polymorphism technique. A total of 173 fragments were found to be differentially expressed in response to water stress in the tolerant cultivar. Seventy of these were cloned, sequenced, and categorized. Similarity analysis using Candidate genes to drought tolerance in sugarcane BLAST revealed that 64% of the fragments differentially expressed code proteins classified as no hits (23%), hypothetical (21%), or involved in stress response (20%), with others were involved in communication pathways and signal transduction, bioenergetics, secondary metabolism, and growth and development. Four genes were analyzed and validated using real-time quantitative polymerase chain reaction to determine their expression and showed consistency with the cDNA-amplified fragment length polymorphism analyses. Our results contribute insight into the molecular responses to water stress in sugarcane and possibility to the development of cultivars with improved tolerance to drought.

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Section: Introductionmentioning

confidence: 99%

Differential gene expression in drought-tolerant sugarcane roots

et al. 2015

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“…However, , studying the acclimation of rice plants to salt stress, observed reduction of CAT when plants were exposed to NaCl. According to Azevedo et al (2011), the capacity of activation of the antioxidant system is one of the main mechanisms that allow the plant to tolerate the oxidative stress. Silva (2010), analyzing six sugarcane genotypes subjected to severe water stress, observed a response of up to 30.23% in APX activity.…”

Section: Bmentioning

confidence: 99%

Enzymatic activity of three sugarcane varieties under salt stress

Carvalho

Corrêa

Carvalho

et al. 2016

Rev. bras. eng. agríc. ambient.

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A B S T R A C TSugarcane is a species of great economic importance to Brazil. The study of enzymatic activity has helped to identify varieties of sugarcane tolerant to salt stress, for planting in Brazilian semiarid regions, where there is the occurrence of saline soils. The objective of this study was to evaluate the enzymatic activity of three varieties of sugarcane subjected to stress caused by salinity. The experiment was conducted in a greenhouse at the Federal Rural University of Pernambuco, in a completely randomized design with four replicates. The leaf blade samples were collected for analysis of soluble proteins and determination of the activity of catalase and ascorbate peroxidase. The protein content was higher for RB962962 and lower for the varieties RB92579 and RB867515. However, in RB867515, there was an increase in the activity of ascorbate peroxidase and catalase, while the varieties RB92579 and RB962962 showed a reduction in the activity of these enzymes. These results indicate that the variety RB867515 has a more efficient mechanism in plant protection against the action of reactive oxygen species.Atividade enzimática de três variedades de cana-de-açúcar sob estresse salino R E S U M O A cana-de-açúcar é uma espécie de grande importância econômica para o Brasil. O estudo da atividade enzimática tem ajudado a identificar variedades de cana-de-açúcar tolerantes ao estresse salino para plantio nas regiões semiáridas brasileiras nas quais ocorre incidência de solos salinizados. Objetivou-se, neste estudo, avaliar a atividade enzimática de três variedades de cana-de-açúcar submetidas ao estresse causado pela salinidade. O experimento foi conduzido em casa de vegetação na Universidade Federal Rural de Pernambuco. Foi feito um delineamento inteiramente casualizado, com quatro repetições. Foram coletadas amostras do limbo foliar para análise das proteínas solúveis e determinação da atividade das enzimas catálase e ascorbato peroxidase. O teor de proteínas foi maior para a variedade RB962962 and menor para as variedades RB92579 e RB867515; entretanto se percebeu, na variedade RB867515, aumento da atividade da ascorbato peroxidase e da catálase enquanto que nas variedades RB92579 e RB962962 ocorreu uma redução da atividade dessas enzimas cujos resultados indicam que a variedade RB867515 apresenta um mecanismo mais eficiente na proteção da planta contra a ação de espécies reativas de oxigênio.

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“…Important detrimental effects also have been reported for sugar cane production (Unica, 2014). In recent years the expansion of sugar cane cultives has been driven by increasing demand for biofuels around the world, requiring the occupation of new agricultural areas where water availability is highly variable or limited (Azevedo et al, 2011). Therefore, to tackle those conditions, the plants need to be able of uptake and use efficiently the mineral nutrients, in order to produce biomass even under water limitation (Waraich et al, 2011).…”

Section: Introductionmentioning

confidence: 99%

Drought-induced alterations in the uptake of nitrogen, phosphorus and potassium, and the relation with drought tolerance in sugar cane

et al. 2017

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Alterações induzidas pela seca na absorção de nitrogênio, fósforo e potássio, e as relações com a tolerância da cana-de-açúcar ao deficit hídrico July, 19, 2016 and approved in November 23, 2016 ABSTRACTAlthough there are evidences that the proper supply of mineral nutrients to plants relieves water stress, little is known on the approach of how the drought affects the absorption and accumulation of nutrients by distinct sugar cane genotypes, or in different parts of a same plant. Thus, the objective of this study was to determine the content and accumulation of N, P and K in the aerial part of plant from three genotypes of sugar cane, submitted to three water potentials in the soil, and check the relationship of these variables with the tolerance of plants to prolonged drought. In order to access this objective, an experiment under greenhouse conditions, comprised by a fatorial 3 × 3, in a randomized block design, and four replicates was carried out. After 90 days from treatment imposition, the plant transpiration rate, plant dry mass, concentration of N, P and K were determined in leaves and culms, as well as in total plant shoot were measured. It was found that tolerance to drought in sugar cane is related to higher levels of N and K in the leaves and stems, and larger accumulations of K and P in the plant shoot. There is high positive correlations among accumulation of N, P and K in the plant shoot and dry matter production by plants submitted to drought. There are intermediate correlations among plant transpiration and nutrient uptake by plants under drought. Plants of the genotype SP81-3250 are more tolerante to prolonged drought, than the RB855453 and IACSP95-5000 plants.Index terms: Saccharum officinarum L.; water limitations; mineral nutrition; soil water potentials; plant growth. RESUMOEmbora existam evidências de que o adequado fornecimento de nutrientes minerais para plantas alivia o estresse hídrico, pouco se sabe sobre a abordagem de como a seca afeta a absorção e acumulação de nutrientes por distintos genótipos de cana-de-açúcar, ou por diferentes partes de uma mesma planta. Assim, o objetivo deste estudo foi determinar o teor e acúmulo de N, P e K na parte aérea da planta de três genótipos de cana-de-açúcar, submetidos a três potenciais hídricos do solo e verificar se existe relação dessas variáveis com a tolerância das plantas ao déficit hídrico prolongado. Para isso, foi realizado um experimento em casa de vegetação, em um esquema fatorial 3×3, em delineamento de blocos casualizados, com quatro repetições. Após 90 dias da imposição dos tratamentos, foi determinada a massa seca e a taxa de transpiração das plantas, a concentração de N, P e K nas folhas e colmos, além do acúmulo desses nutrientes na parte aérea das plantas. Verificou-se que a tolerância à seca em cana está relacionada com níveis mais altos de N e K nas folhas e caules e maiores acumulações de K e P na parte aérea das plantas. Existem fortes correlações positivas entre acúmulo de N, P e K na parte aérea das plantas e produção...

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Sugarcane Under Pressure: An Overview of Biochemical and Physiological Studies of Abiotic Stress

Cited by 83 publications

References 90 publications

Differential gene expression in drought-tolerant sugarcane roots

Differential gene expression in drought-tolerant sugarcane roots

Enzymatic activity of three sugarcane varieties under salt stress

Drought-induced alterations in the uptake of nitrogen, phosphorus and potassium, and the relation with drought tolerance in sugar cane

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