The Effects of Priming and Ageing on Resistance to Deterioration of Tomato Seeds

Argerich, C.A.; Bradford, Kent J.; Tarquis, Ana M.

doi:10.1093/jxb/40.5.593

Cited by 65 publications

(44 citation statements)

References 8 publications

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“…For instance, Georghiou et al (1987) reported that in sweet pepper (Capsicum annuum L.), osmoconditioning in a 0.4 M mannitol solution for 4 d considerably delayed aging and increased seed longevity. However, a reduction in seed storage life was observed by other investigators for some species like tomato (Argerich and Bradford, 1989b), rice (Oryza sativa L.) (Basu and Pal, 1979) and lettuce (Lactuca sativa L.) (Weges, 1987;Tarquis and Bradford, 1992). Seed storability is determined by at least two factors: (i) the amount of energy which is available for germination, and (ii) the amount of damage which accumulates during development and storage and which has to be repaired before germination (Osborne, 1983).…”

Section: Discussionmentioning

confidence: 77%

Effects of osmotic priming on dormancy and storability of tomato (Lycopersicon esculentumMill.) seeds

Liu

Bino²,

Burg³

et al. 1996

Seed Sci. Res.

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Freshly harvested tomato (Lycopersicon esculentum Mill, cv. Moneymaker) seeds were osmotically primed for 8 d in -1.0 MPa PEG-6000 solution and dried to about 6% water content for storage. Such so-called 'fresh PEG priming' enhanced seed germination and improved seedling performance as compared with the untreated control. Fresh PEG priming neither alleviated seed dormancy nor promoted DNA replication as was the case when seeds were dried upon harvest and subsequently primed in PEG (normal PEG priming). However, the addition of 10 JIM GA 4+7 to the osmotic priming solution triggered replicative DNA synthesis of fresh-priming seeds and further enhanced the germination process. After 5 months of storage in ambient temperature conditions, fresh PEG-primed seeds maintained more positive effects gained from priming, whereas, normal PEG-primed seeds had lost the promoting effects on germination. Normal PEG-primed seeds were much more susceptible to controlled deterioration than fresh PEG-primed seeds. It is suggested that the advancement of germination is negatively correlated with seed storability. The mechanisms of seed priming in relation to nuclear replication activities and physical changes are discussed.

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Section: Discussionmentioning

confidence: 77%

Effects of osmotic priming on dormancy and storability of tomato (Lycopersicon esculentumMill.) seeds

Liu

Bino²,

Burg³

et al. 1996

Seed Sci. Res.

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“…The CDT conditions for tobacco seeds required adaptation to the high CDT resistance already showed by the nontransgenic material. Such resistance has precedents in other small-sized seeds from Solanaceae, such as tomato (Argerich et al, 1989). Our conditions to achieve substantial deterioration of tobacco seeds in a reasonable time are not very different from those generally used for less resistant seeds (45°C, MCFW up to 24%; Powell, 1995).…”

Section: Discussionmentioning

confidence: 90%

“…Despite this, we should add caution to any inference from our results of improved seed shelf life because, as in other cases, longevity predictions based on results on CDT experiments might be controversial (for review, see McDonald, 1999). However even if similar predictions have not been performed with tobacco seeds or with small-sized seeds from Solanaceae, it is worth mentioning that tomato seeds are highly resistant to CDT (Argerich et al, 1989). Tomato seeds also have been independently shown to have a high relative storability index (for review, see Copeland and McDonald, 2001).…”

Section: Discussionmentioning

confidence: 99%

“…Seeds from the same lines analyzed for basal thermotolerance in Figure 4 were subjected to CDT suited for tobacco seeds, under conditions similar to those reported in the literature for other small-sized seeds (Powell, 1995;McDonald, 1999), in particular, for seeds of other Solanaceae (such as tomato [Lycopersicon esculentum]), which are quite resistant to CDT (Argerich et al, 1989). The seed MCFW was raised to 28.1% 6 0.5% by controlled addition of water, and rehydrated seeds were sealed in plastic bags and subsequently incubated at 50°C (for details, see ''Materials and Methods'').…”

Section: Persistence Of Basal Thermotolerance In Ds10:a9 Seedsmentioning

confidence: 99%

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Improved Resistance to Controlled Deterioration in Transgenic Seeds

et al. 2006

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We show that seed-specific overexpression of the sunflower (Helianthus annuus) HaHSFA9 heat stress transcription factor (HSF) in tobacco (Nicotiana tabacum) enhances the accumulation of heat shock proteins (HSPs). Among these proteins were HSP101 and a subset of the small HSPs, including proteins that accumulate only during embryogenesis in the absence of thermal stress. Levels of late embryogenesis abundant proteins or seed oligosaccharides, however, were not affected. In the transgenic seeds, a high basal thermotolerance persisted during the early hours of imbibition. Transgenic seeds also showed significantly improved resistance to controlled deterioration in a stable and transgene-dependent manner. Furthermore, overexpression of HaHSFA9 did not have detrimental effects on plant growth or development, including seed morphology and total seed yield. Our results agree with previous work tentatively associating HSP gene expression with phenotypes important for seed longevity. These findings might have implications for improving seed longevity in economically important crops.

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“…t 50 increased; Fig. This was shown, for example, for tomato (Argerich et al, 1989), lettuce (Tarquis and Bradford, 1992) Times to obtain 50% germination (t 50 ) at 5°C; (᭹) germination percentages obtained after 10 d at 10°C (G 10 ) ± SD. G 10 decreased; Fig.…”

Section: Influence Of Priming Conditions On Priming Efficiency and Somentioning

confidence: 87%

Sugarbeet seed priming: effects of priming conditions on germination, solubilization of 11-S globulin and accumulation of LEA proteins

et al. 2000

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The relationship between initial mobilization of 11-S globulin storage protein (leading to solubilization of its Bsubunit) and germination performance after priming was studied in sugarbeet (Beta vulgaris L.) seeds. Priming was conducted for 2 d either in water (hydropriming) or in -2.0 MPa polyethylene glycol-8000 (osmopriming), at various temperatures ranging from 5 to 40°C and oxygen concentrations in the atmosphere ranging from 0 to 21%. For both types of pre-treatments, the range of temperatures and the concentrations of oxygen which were effective in priming were very similar to those which allowed solubilization of the B-subunit of 11-S globulin, supporting the robustness of this protein marker for optimization of sugarbeet seed priming. Furthermore, the temperature and oxygen dependence of priming efficiency closely paralleled that for germination of the untreated seeds, reinforcing the finding that the beneficial effect of priming corresponded to the advancement of germination sensu stricto (i.e. phase II of the germination process). For priming times longer than 2 d, particularly for osmopriming, there was a very dramatic decrease in germination of the treated seeds. For instance, following a 14 d osmopriming at 25°C as much as 60% of the pre-treated seed population failed to germinate when transferred to water. This loss in germination performance quite closely paralleled degradation of LEA (late embryogenesis abundant) proteins, notably a heat-stable seed-specific protein of about 60 kDa and a seed-specific biotinylated LEA protein.

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The Effects of Priming and Ageing on Resistance to Deterioration of Tomato Seeds

Cited by 65 publications

References 8 publications

Effects of osmotic priming on dormancy and storability of tomato (Lycopersicon esculentumMill.) seeds

Effects of osmotic priming on dormancy and storability of tomato (Lycopersicon esculentumMill.) seeds

Improved Resistance to Controlled Deterioration in Transgenic Seeds

Sugarbeet seed priming: effects of priming conditions on germination, solubilization of 11-S globulin and accumulation of LEA proteins

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