Drought effects on the early development stages of Panicum virgatum L.: Cultivar differences

Aimar, Darío C.; Calafat, Mario Jose; Andrade, Andrea; Carassay, Luciano Raúl; Bouteau, François; Abdala, Guillermina; Molas, María Lía

doi:10.1016/j.biombioe.2014.03.004

Cited by 35 publications

(20 citation statements)

References 65 publications

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“…However, enzyme activity may be maintained low, since recovery is gradual. This is evident in Panicum virgatum, in which a slight variation in enzyme activity was recorded 12 h after rehydration, increasing after 24 h (Aimar et al 2014). A similar behavior has been observed in citrus plants (Campos et al 2011), in which SOD and POD activities showed no variation during the rehydration of Portulaca oleracea for 72 h (Jin et al 2015).…”

Section: Resultssupporting

confidence: 74%

“…Increased enzyme activity linked to oxidative stress under drought is reported in a wide range of crops, including corn (Talaat et al 2015), rice (Kumar et al 2015), wheat (Huseynova 2012), grass of the Cynodon genus (Liu & Chan 2015) and other C 4 plants (Aimar et al 2014). However, when water stress is severe, the enzyme activity is limited.…”

Section: Key-wordsmentioning

confidence: 99%

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Azospirillum brasilense affects the antioxidant activity and leaf pigment content of Urochloa ruziziensis under water stress

Bulegon

Guimarães

Laureth

2016

Pesqui. Agropecu. Trop.

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Water stress leads to the formation of reactive oxygen species, resulting in degradation of leaf pigments and cell death. This study aimed at assessing the oxidative enzyme activity and photosynthetic pigment content in seeds and/or leaves of Urochloa ruziziensis (syn. Brachiaria) inoculated with Azospirillum brasilense under water stress. Assessments of soluble proteins, chlorophylls a and b and carotenoid contents, as well as the activity of superoxide dismutase (SOD), peroxidase (POD) and catalase (CAT) enzymes, were conducted at the beginning of the water stress process and also under severe water stress and during plant rehydration. Seed inoculation showed a reduction in the action of SOD, under water stress, with an increase after rehydration. POD exhibited an activity greater than CAT in all the assessments, but it did not differ statistically under severe water stress. CAT activity increased under severe stress in all treatments, particularly for leaf inoculation. Chlorophyll a was slightly degraded, maintaining the levels of the irrigated control, while the chlorophyll b and carotenoid contents, in plants subjected to leaf inoculation with A. brasilense, were higher under water stress. It was concluded that the leaf inoculation of U. ruziziensis with A. brasilense makes the plant more efficient at removing reactive oxygen species and protecting chlorophyll a.

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Section: Resultssupporting

confidence: 74%

Section: Key-wordsmentioning

confidence: 99%

Azospirillum brasilense affects the antioxidant activity and leaf pigment content of Urochloa ruziziensis under water stress

Bulegon

Guimarães

Laureth

2016

Pesqui. Agropecu. Trop.

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“…These findings suggest that constitutively high ABA levels in tolerant F 3 families confer an advantage for these sunflower plants to cope with adverse conditions [14]. Similarly, [15] reported that drought (without irrigation) triggered an abrupt peak of ABA in both Kanlow and Greenville cv of Panicum virgatum L. (switchgrass) being higher in the tolerant Kanlow (11-fold) than in the sensitive Greenville (4.5-fold). However, the correlation between ABA endogenous level and stress-tolerance is not always positive.…”

Section: Effect Of Aba On Plant Growth Responses Under Drought and Samentioning

confidence: 59%

“…Also, SA level has been shown to decrease with salinity in Iris hexagona [50]. Recently, [15] reported that SA level was not modified by water stress in drought-tolerant cv Kanlow of P. virgatum while it decreased in drought-sensitive cv Greenville. These studies above mentioned demonstrated that the endogenous SA level is a plastic response due to it is modified according to organ, ontogenetic stage, particular species and type of stress.…”

Section: Effect Of Sa On Plant Growth Responses Under Drought and Salmentioning

confidence: 99%

“…Some studies demonstrated that JA accumulation during drought is not stable; for example, water-stressed soybean plants exhibited a transient increase in JA, followed by a decrease to below wild-type levels [31]. Nevertheless, in two Kanlow and Greenville cv of P. virgatum the JA level did not increase significantly in response to drought [15]. Despite of these fluctuations, in the literature there are numerous studies showing a JAs endogenous increase under abiotic stresses.…”

Section: Effect Of Ja On Plant Growth Responses Under Drought and Salmentioning

confidence: 99%

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Alterations of Endogenous Hormonal Levels in Plants under Drought and Salinity

Llanes¹,

Andrade²,

Alemano³

et al. 2016

AJPS

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The phytohormones are pivotal chemical messengers produced within the plant that regulate its growth and development, and responses to environmental stimuli. Drought and salinity are adverse environmental factors that disturb the plant hormonal balance. Accordingly, these hormonal fluctuations modify the cellular dynamic and hence they play a central role in regulating plant growth responses to abiotic stresses such as drought and salinity. The present review gives an update about the alterations of endogenous phytohormones such as abscisic acid (ABA), auxins (Aux), cytokinins (CKs), ethylene (ET), gibberellins (GAs), jasmonates (JAs), salicylic acid (SA), brassinosteroids (BRs), strigolactones (SLs) and nitric oxide (NO) that occur as part of the adaptative responses of plant against drought and salt stresses. Better understanding of the endogenous hormonal changes during the plant response to both abiotic stresses will contribute, in part, to the development of stress-tolerant plants.

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Changes in the Endogenous Phytohormone Status of Drought-Stressed Impatiens walleriana Hook. f. Plants Treated with Methyl Jasmonate

Đurić,

Motyka,

Dobrev

et al. 2024

J Plant Growth Regul

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Drought effects on the early development stages of Panicum virgatum L.: Cultivar differences

Cited by 35 publications

References 65 publications

Azospirillum brasilense affects the antioxidant activity and leaf pigment content of Urochloa ruziziensis under water stress

Azospirillum brasilense affects the antioxidant activity and leaf pigment content of Urochloa ruziziensis under water stress

Alterations of Endogenous Hormonal Levels in Plants under Drought and Salinity

Changes in the Endogenous Phytohormone Status of Drought-Stressed Impatiens walleriana Hook. f. Plants Treated with Methyl Jasmonate

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