Insights on germinability and desiccation tolerance in developing neem seeds ( Azadirachta indica ): Role of AOS, antioxidative enzymes and dehydrin-like protein

Sahu, Balram; Sahu, Alok Kumar; Chennareddy, Srinivasa Rao; Soni, Avinash; Naithani, S. C.

doi:10.1016/j.plaphy.2016.12.022

Cited by 14 publications

(7 citation statements)

References 37 publications

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“…Oxidation of saturated and unsaturated fatty acids during ageing may be the possible reason for decrease in germination. It has been reported by (Sahu et al 2017) that oxidation protection system gets disturbed during storage resulting in decreased germination percentage. Among the different types of Indian mustard, both conventional type and single zero genotypes have significantly higher mean germination percentage, i.e.…”

Section: Resultsmentioning

confidence: 99%

“…Loss of vigour and viability is accompanied with solute leakage and excessive accumulation of ROS (superoxide radical and H 2 O 2 ) in seeds , Swami et al 2016. Protection against ROS is offered by battery of anti-oxidases, such as peroxidase (POD) and catalase (CAT) and their impairment is the key determinants in the loss of vigour in seeds (Sahu et al 2017). Non-enzymatic antioxidants like ascorbic acid (ASC) and glutathione (GSH) can donate electrons to form dehydroascorbic acid (DHA) and glutathione disulphide (GSSG) respectively (Kumari et al 2017).…”

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confidence: 99%

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Seed longevity and vigour studies in different types of Indian mustard

Archana

Yadav

et al. 2021

Indian J Agri Sci

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An experiment was conducted at ICAR-Indian Agricultural Research Institute, New Delhi (2017-18) to study the possible reason for reduced seed vigour in Indian quality mustard genotypes during storage for the first time. Freshly harvested seeds, one year, two year aged seeds and controlled deteriorated seeds of freshly harvested seeds of conventional and quality Indian mustard were used for the study. Reactive oxygen species (ROS), i.e. hydrogen peroxide (H2O2) and superoxide radical (O2 .-) were estimated along with enzymatic antioxidants such as catalase and peroxidase and redox couples ratio (ASC/DHA and GSH/GSSG) in all the nine genotypes of different age group and correlated with germination percentage, mean germination time and seed vigour indices. The experiment revealed that during storage, the amount of ROS accumulation goes on increasing and both enzymatic and non-enzymatic antioxidants goes on decreasing. In comparison to conventional genotypes, quality genotypes were found to contain significantly lower level of antioxidants and significantly higher level of ROS content during the storage period. Germination percentage as well as seed vigour indices were negatively correlated with ROS and positively correlated with enzymatic and non-enzymatic antioxidants. This experiment revealed that reduced vigour in quality genotypes could be due to faster deterioration during the storage due to increased production of ROS.

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Section: Resultsmentioning

confidence: 99%

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confidence: 99%

Seed longevity and vigour studies in different types of Indian mustard

Archana

Yadav

et al. 2021

Indian J Agri Sci

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“…Radicles of pea seedlings were powdered in liquid nitrogen (LN 2 ) and used for in vitro quanti cation of ROS following Schopfer (2001) with slight modi cations as mentioned elsewhere (Sahu et al 2017a).…”

Section: In Vitro Quanti Cation Of Rosmentioning

confidence: 99%

“…Desiccation tolerance (DT), in orthodox seeds, enables the maintenance of viability for a prolonged period in the dry state (Buitink et al 2006 The desiccation-tolerant seeds are (i) equipped with an array of protective mechanisms that act sequentially to endure the dehydration-induced cellular challenges (Sahu et al 2018;Oliver et al 2020;Smolikova et al 2021), and (ii) able to restore the repairable cell damage that is associated with the desiccation and/or rehydration process (Maia et al 2011; Kalemba and Pukacka 2012; Sahu et al 2017aSahu et al , 2018. In contrast to dry seeds, germinated seeds are highly sensitive to desiccation (Maia et al 2011; Peng et al 2017; Marques et al 2019).…”

Section: Introductionmentioning

confidence: 99%

Role of reactive oxygen species and antioxidative enzymes in the loss and re-establishment of desiccation tolerance in germinated pea seeds

Sahu,

Naithani

2023

South African Journal of Botany

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“…The desiccation tolerance of the seeds determines the optimum storage options for preserving the planting stock. Desiccation sensitive recalcitrant seeds generally die at relatively high moisture content (MC) of 0.2 to 0.3 g H2O/g fresh weight (FW) (Boucher et al, 2010;Chen et al, 2011;Hill et al, 2012;Xia et al, 2012;Delahaie et al, 2013;Joёt et al, 2013;Sahu et al, 2017;Barbedo, 2018). These seeds cannot be stored at MC that retains their viability with no impairment as they remain metabolically active and are killed within short periods by heat produced with the relatively high respiration rates.…”

Section: Introductionmentioning

confidence: 99%

Fruit Ripeness Effects on Characteristics, Germination and Desiccation Tolerance of Syzygium myrtifolium Walp. Seeds

Fui Ying Tsan,

Nur Farhanis Awang

2021

JTPP

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To plant Syzygium myrtifolium Walp. on harsh urban sites, planting materials of seed origin having better developed tap roots are preferred compared to those propagated from stem cuttings. However, fully ripe fruits at 8 weeks after fruit set are heavily lost to birds. In the current study, the unpalatable semi-ripe fruits at 7 weeks were found suitable for propagation. The seeds from the semi-ripe fruits showed mean germination rate of 93% and developed normal seedlings within 1 week, although continued growth with increases in size and fresh weight (FW) in the fruits and seeds was significant towards completion of fruit ripening. Thus, harvesting of fruits within the short period between these two fruit developmental phases is critical in the seed procurement process of this plant species. At the semi-ripe stage, pericarp exhibiting mixture of red and black colour can be a practical guide to indicate the suitable time for harvesting the fruits. Nonetheless, subsequent desiccation trial aimed to determine the storability of the seeds at postharvest found that the seeds obtained from both the semi-ripe and fully ripe fruits had drastic loss of germinability at seed moisture content of approximately 0.3 g H2O/g FW. Storage of the seeds above this relatively high moisture level for future planting was detrimental because the seeds age rapidly when they remain metabolically active with high respiration rates. Microbial infestation will also be an added problem during seed storage. Therefore, the seeds need to be sown fresh.

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Insights on germinability and desiccation tolerance in developing neem seeds ( Azadirachta indica ): Role of AOS, antioxidative enzymes and dehydrin-like protein

Cited by 14 publications

References 37 publications

Seed longevity and vigour studies in different types of Indian mustard

Seed longevity and vigour studies in different types of Indian mustard

Role of reactive oxygen species and antioxidative enzymes in the loss and re-establishment of desiccation tolerance in germinated pea seeds

Fruit Ripeness Effects on Characteristics, Germination and Desiccation Tolerance of Syzygium myrtifolium Walp. Seeds

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