Transmissible reproductive changes following physiological adaptation to salinity in <i>Sorghum bicolor</i>

Amzallag, G. N.

doi:10.1111/j.1469-8137.1996.tb01852.x

Cited by 13 publications

(12 citation statements)

References 32 publications

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“…The progeny of salt^adapted Sorghum displayed an in-Specific malformations were observed on some of the crease in salinity tolerance (Amzallag 1994), indicating Sorghum leaves unfolding during the 3-week phase of that the response of Sorghum plants to salinity was infiumaturation of the ad^tation response. This phenome-enced by the salt adaptation induced in their parents.…”

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confidence: 99%

Leaf malformation during early development in Sorghum. Evidence for an embryonic developmental window

Amzallag

Seligmann

Lerner

1997

Physiologia Plantarum

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1997. Leaf malformation during early development in Sorghum. Evidence for an embryonic developmental window. -Physiol. Plant. 99:470-476.Salt adaptation was induced in two successive generations of Sorghum bicolor, and the germination of their seeds was compared. When germinated in the absence of NaCl, the progeny of adapted plants displayed a specific malformation at the first two leaves, which was never observed in progeny of control plants. The frequency of leaf malformation was enhanced in progeny of the second generation of adapted plants, in-dici^ng a cumulative influence of salt adaptation. When germinated in the presence of 75 mAf NaCl, seedlings from seeds of salt-adapted plants never displayed the leaf malformation, whereas it was observed on seedlings from seeds of control plants germinated in the presence of 75 nriM NaCl. The occurrence of leaf malformation was analyzed for progeny of 20 salt-adapted plants germinated in the absence of NaCl. The link with the reproductive characters of the parents indicates a strong parental control on the expression of the leaf malformation. A comparison with previous data relative to the leirf malformation in Sorghum suggests the existence of a developmental window which 'opens' during embryo morphogenesis. This enables the imprinting of the embryo by the parent's physiological environment. This conclusion is related to other data describing a long-term matemal infiuence in plants.

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Leaf malformation during early development in Sorghum. Evidence for an embryonic developmental window

Amzallag

Seligmann

Lerner

1997

Physiologia Plantarum

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“…The late DPL response was considerably increased in A1 plants (Fig. 2), whereas the perturbation in fertility was globally similar in A0 and A1 plants, which were exposed to the same environmental conditions (Amzallag 1996 . It seems, therefore, that the intensity of the late DPL response depends not only on the perturbation, but also on the capacity of the plant to respond to it.…”

Section: Evidence For a Late Developmental Windowmentioning

confidence: 91%

“…2). In Sorghum bicolor, vegetative development is considerably modified during induction of salt adaptation (Amzallag & Lerner 1994), and these modifications perturb fertility (Amzallag 1996(Amzallag , 1998. This disturbing influence of salt adaptation on development is confirmed by the negative relationship observed between DPL 5-9 and fertility, because DPL 5-9 is a marker of the intensity of expression of the adaptation response (see Introduction).…”

Section: Adaptation and Reproductive Developmentmentioning

confidence: 93%

“…The second 'opens' during vegetative development, and it is marked by the intermediate DPL response on leaves 5-9 . Reproductive development is perturbed in salt-adapted Sorghum, and some plants are sterile or almost sterile, because of the early abortion of spikelets (Amzallag 1996(Amzallag , 1998. In salt-adapted plants, DPLs were sometimes observed on the last leaves developed before flowering (preliminary observations).…”

Section: Introductionmentioning

confidence: 99%

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Perturbation in leaves of salt‐treated Sorghum: elements for interpretation of the normal development as an adaptive response

Amzallag¹,

Seligmann

1998

Plant Cell & Environment

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Developmental windows are specific periods of sensitivity in which a perturbation may be adaptively integrated. In Sorghum bicolor, two developmental windows which enable adaptive adjustment to salinity (increase in tolerance) have been described during vegetative development. A third developmental window is open during the transition between vegetative and reproductive development. This third developmental window was analysed using morphological markers (specific malformations on leaves), and their relationship with vegetative and reproductive events. A positive link was observed between fertility and malformations on the last leaf. We concluded that this late window enables an adaptive adjustment of reproductive development, counteracting the negative effect of salt adaptation on fertility. Developmental windows open following rapid changes in growth of the different organs. They permit adaptive adjustments to emergence or senescence of various organs. This phenomenon is integrated within normal development, but developmental windows are enlarged for plants exposed to perturbation and for their progeny.

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“…These physiological effects of NaCI salinity on plants have been studied in great detail (Kingsbury et al, 1984;Levy et al, 1988;Akita & Cabuslay, 1990;Dudeck et al, 1993;Amzallag, 1996), but less information is available on the effects of NaCi salinity on the root cellular ultrastructure (Werker et al, 1983;Koyro et al, 1997). It is commonly accepted that roots are among the first organs to be affected by salt stress, and there is some direct evidence that the root meristem is sensitive to salt injury and salt induced root growth inhibition (Huang & Van Steveninck, 1988).…”

Section: Introductionmentioning

confidence: 97%

Cell and nuclear degradation in root meristems following exposure of potatoes (Solanum tuberosum L.) to salinity

2001

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SummaryIn many plant species, it has been demonstrated at the whole plant level that supplemental Ca 2+ alleviates the effects of salinity stress. These effects have been attributed to physiological processes, but there are no reports of the effects of supplemental Ca 2 § on preventing nuclear damage to the root meristematic cells following exposure to NaCI salinity. Two in vitro cultured potato (Solarium tuberosum L.) cultivars, analysed by fluorescent microscopy and flow cytometry, showed a similar pattern of salinity-induced changes to the nuclei of root meristematic cells. Damage occurring after only a few hours was followed by nuclear degradation at 24 h. Flow cytometry histograms showed a reduction in GI and G2 nuclei and an increase in degraded nuclei in NaCI-stressed roots. Salinity-induced nuclear degradation was alleviated by the addition of CaCI,.

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Transmissible reproductive changes following physiological adaptation to salinity in Sorghum bicolor

Cited by 13 publications

References 32 publications

Leaf malformation during early development in Sorghum. Evidence for an embryonic developmental window

Leaf malformation during early development in Sorghum. Evidence for an embryonic developmental window

Perturbation in leaves of salt‐treated Sorghum: elements for interpretation of the normal development as an adaptive response

Cell and nuclear degradation in root meristems following exposure of potatoes (Solanum tuberosum L.) to salinity

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