Fluctuation of oxidative stress indicators in Salix nigra seeds during priming

Roqueiro, Gonzalo; Maldonado, Sara; Ríos, María del Carmen Martínez; Maroder, Horacio

doi:10.1093/jxb/ers030

Cited by 21 publications

(19 citation statements)

References 52 publications

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“…On the contrary, no significant amounts of H 2 O 2 were found in any of the organs during the development stages following germination. This is consistent with the data reported by Roqueiro et al (), and may be a consequence of the high stimulation of POX and (to a lesser extent) APX activities observed after the photooxidation treatments. It is worth noting that increments of peroxidase activity similar to those observed in this work have been reported in seedlings of other species exposed to different types of abiotic stress (Lee and Lin , Oidaira et al , Choi et al , Dey et al , Chugh et al ).…”

Section: Discussionsupporting

confidence: 93%

“…O 2 •− production was also detected in the radical apexes and lateral roots, and in the vascular cylinder of the hypocotyls. In control seedlings, active O 2 •− generation was mostly restricted to the root apex, and, to a lesser extent, to the vascular cylinder of the root, consistent with previously reported data for this species (Causin et al , Roqueiro et al ).…”

Section: Histological and Cellular Analysis Of Cotyledonssupporting

confidence: 91%

“…In short, seeds were stored for 3 days in the dark or under cool‐white fluorescent light at either 2 (low light intensity) or 10 (high light intensity) µmol m −2 s −1 , at 25°C and 45% relative humidity (RH) (over K 2 CO 3 saturated solution), in order to stabilize water content at 9–10% (dwb). The lower intensity corresponds to the average photosynthetic photon flux density measured on ground surface, where seeds fall after being scattered under a dense canopy; the higher intensity corresponds to the maximum intensity which barely affects total germination (TG), but significantly reduces NG percent (Roqueiro et al ). The treatments were carried out in a SANYO MIR‐153 Cooled Incubator.…”

Section: Methodsmentioning

confidence: 99%

“…More recently, Popova et al () demonstrate that fresh S. caprea seeds tolerate desiccation up to 8.5–9.6 moisture content without any noticeable loss in viability. Additionally, Maroder et al () and Roqueiro et al (, ) add three species, i.e. S. alba L., S. matsudana Koidz.…”

Section: Introductionmentioning

confidence: 99%

“…Abbreviations -APX, ascorbate peroxidase; CAT, catalase; DAB, 3,3 -diaminobenzidine-HCl; DAS, days after sowing; dwb, dry weight basis; HSD, honestly significant difference; LM, light microscopy; MDA, malondialdehyde; NBT, nitro-blue tetrazolium chloride; NG, normal germination; PCD, programmed cell death; POX, guaiacol peroxidase; RH, relative humidity; ROS, reactive oxygen species; SOD, superoxide dismutase; TEM, transmission electron microscopy; TG, total germination. Additionally, Maroder et al (2000) and Roqueiro et al (2010Roqueiro et al ( , 2012 add three species, i.e. S. alba L., S. matsudana Koidz.…”

Section: Introductionmentioning

confidence: 99%

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Willow seedlings from photooxidized seeds accelerate cotyledon death and anticipate first leaf emergence: a histological and biochemical study following germination

Roqueiro

Causin

Olle-Resa

et al. 2013

Physiologia Plantarum

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In willow seeds, photooxidative damage is mainly restricted to the outer cotyledonary tissues, significantly reducing normal germination. Here we analyzed the damage generated in cotyledonary tissues and investigated whether the increase in reactive oxygen species (ROS) generation in seedlings from photooxidized seeds can affect the morphogenetic capacity of the shoot apical meristem. Seeds were photooxidized under different light intensities and the evolution of the damage during seedling growth was studied by light and transmission electron microscopies. The level of lipid peroxidation and changes in antioxidant capacity were measured following the time course of superoxide dismutase, catalase, ascorbate peroxidase and guaiacol peroxidase enzyme activities, and the effect of photooxidative stress on the genesis of new leaf primordia and lateral roots was examined. Early and active endocytosis and autophagy, changes in chloroplast morphology, as well as the accumulation and diffusion of ROS all play important roles in the early cell death observed in cotyledonary tissues. Following germination, seedlings from photooxidized seeds anticipated the emergence of first leaves, which complemented the altered functionality of the damaged cotyledons.

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Section: Discussionsupporting

confidence: 93%

Section: Histological and Cellular Analysis Of Cotyledonssupporting

confidence: 91%

Section: Methodsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Willow seedlings from photooxidized seeds accelerate cotyledon death and anticipate first leaf emergence: a histological and biochemical study following germination

Roqueiro

Causin

Olle-Resa

et al. 2013

Physiologia Plantarum

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Practical approaches to enhance water productivity at the farm level in Asia: A review

Meena,

Karnam,

Sujatha

et al. 2023

Irrigation and Drainage

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The global population is constantly increasing, reached 8 billion in November 2022 and is expected to reach 9 billion by 2037. This increased population is expected to increase the demand for food, clothing and shelter, which in turn are heavily dependent on limited water resources. The available freshwater resources for agricultural use are further declining due to overexploitation and changing climate in the major food baskets of the world. This increasing water scarcity is exacerbated by expanding cities due to increasing urbanization. This calls for a new look at the allocation of water to agriculture. Therefore, the development of new strategies to improve agricultural water use may serve as an important adaptation strategy. This review attempts to include a comprehensive review of the literature on (i) the status and definition of water productivity and (ii) factors responsible for low water productivity (WP) in Asian agriculture. Furthermore, it contains practical approaches to enhance water use efficiency at the farm level covering all field crops and a range of soil types, which include (i) agronomic interventions; (ii) genetic interventions, such as the identification and cultivation of crop cultivars with high WP; and (iii) genotype, environment and crop management interactions for higher WP.

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