Fusicoccin-induced cell elongation and endogenous fusicoccin-like ligands in germinating seeds

Antipova, O. V.; Bartova, L. M.; Kalashnikova, T. S.; Obroucheva, N. V.; Voblikova, V. D.; Muromtsev, G. S.

doi:10.1016/s0981-9428(02)00020-7

Cited by 21 publications

(17 citation statements)

References 13 publications

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“…Fusicoccin appears to activate pre-existing PM H + -ATPase enzymes by promoting the association of 14-3-3 proteins with the C-terminal domain of the PM H + -ATPase (Oecking et al, 1997;Fullone et al, 1998). The impact of fusicoccin on germination is therefore solely the result of the stimulation of cell elongation (Antipova et al, 2003), which further confirms that cell elongation is required for radicle protrusion and therefore germination in T. minuta achenes.…”

Section: Article In Presssupporting

confidence: 57%

“…The stimulation of germination by fusicoccin, a toxic metabolite from Fusicoccum amygdale Delacr. (Lado et al, 1975;Pardi et al, 1980;Galli et al, 1981;Antipova et al, 2003;Evidente et al, 2006), also suggests that cell elongation plays a major role in germination, as fusicoccin promotes the activation of plasma membrane (PM) H + -ATPases which contributes to elongation growth (De Boer, 1997).…”

Section: Introductionmentioning

confidence: 99%

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Cell division versus cell elongation: The control of radicle elongation during thermoinhibition of Tagetes minuta achenes

Taylor

Hills

Staden

2007

Journal of Plant Physiology

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Section: Article In Presssupporting

confidence: 57%

Section: Introductionmentioning

confidence: 99%

Cell division versus cell elongation: The control of radicle elongation during thermoinhibition of Tagetes minuta achenes

Taylor

Hills

Staden

2007

Journal of Plant Physiology

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“…It is now widely believed that cell enlargement is the result of interacting effects of turgor pressure, mechanical strength of cell wall microfibers and wall loosening due to various biochemical factors including auxin (Lüthen 2015), fusicoccin (Antipova et al 2003), expansin (Cosgrove 2000a), etc. At the lowest level, the description of cell/plant organ evolution may be expressed in terms of the biophysics and mechanics of the cell wall during growth.…”

Section: Introductionmentioning

confidence: 99%

Effective diffusion rates and cross-correlation analysis of “acid growth” data

Pietruszka

Haduch-Sendecka

2016

Acta Physiol Plant

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We investigated the growth-temperature relationship in plants using a quantitative perspective of a recently derived growth functional. We showed that auxininduced growth is achieved by the diffusion rate, which is almost constant or slowly ascending in temperature, while the diffusion rate of fusicoccin (FC)-induced growth increases monotonically with temperature for the entire temperature range (0-45)°C, although for some concentrations of indole-3-acetic acid (IAA), ''super-diffusion'' takes place for unperturbed growth. We also calculated the cross-correlations and the derivative of cross-correlations for elongation growth (rate) and pH as a function of time delay (lag) parameterised by temperature for artificial pond water (APW) control conditions (endogenous growth) and exogenous IAA and FC that were introduced into the medium. Dimensionality analysis revealed that discontinuities in the cross-correlation derivative corresponded to H ? ion kinetics, which attained definite numerical values that were approximately proportional to the (logarithm of) proton secretion rates (or relative buffer acidification). Furthermore, three types of experiments were compared: for abraded coleoptiles, coleoptile segments and intact growing seedlings. From the cross-correlation analysis, it was found that the timing of IAA and FC-induced proton secretion and growth matched well. Unambiguous results concerning the canvas constituting acid growth hypothesis were obtained by cross-and auto-correlation analysis: (1) for abraded coleoptiles, because of the lowering of the cuticle potential barrier, auxin-induced cell wall pH decreased simultaneously with the change in growth rate; no advancement or retardation of pH (proton efflux rate) or growth rate took place, (2) exogenous protons were able to substitute for auxin thus causing wall loosening and growth, (3) although the underlying molecular mechanisms differ vastly, a potent stimulator of proton secretion, the fungal toxin FC, promoted growth that was similar to auxin, although of an elevated intensity; as for auxin-no advancement or retardation took place.

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“…Fusicoccin, by promoting seed germination and increasing cell enlargement, was expected to modify the embryonic axis elongation stage and growth of the emerged radicle. 38,39 The effect of the two drugs on the exact time of radicle protrusion was not determined in this study because we knew that it was likely to be slightly advanced with fusicoccin and very little affected by oryzalin compared with MS medium. 34,39 However, radicle elongation was observed in both drug treatments as well as for the MS medium from 21 h of imbibition.…”

Section: ■ Discussionmentioning

confidence: 99%

Water Mobility and Microstructure Evolution in the Germinating Medicago truncatula Seed Studied by NMR Relaxometry. A Revisited Interpretation of Multicomponent Relaxation

Lahaye

Falourd

Limami

et al. 2015

J. Agric. Food Chem.

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The water status of Medicago truncatula Gaertn. seed was followed by low-field NMR relaxometry during germination with and without oryzalin or fusicoccin used as growth modulators. T1 and T2 relaxation times and proportions P1 and P2 were determined on fresh, frozen, and freeze-thawed samples to characterize changes in water dynamics and compartmentation and in the nonfreezing water fraction. The results demonstrate that low-field NMR relaxometry allowed differentiating germination phases and events occurring during them as well as perturbations related to the presence of growth modulators. The results provide clear evidence that the classical multicomponent relaxation interpretation cannot directly relate T2 components and morphological compartments in biological tissue.

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Fusicoccin-induced cell elongation and endogenous fusicoccin-like ligands in germinating seeds

Cited by 21 publications

References 13 publications

Cell division versus cell elongation: The control of radicle elongation during thermoinhibition of Tagetes minuta achenes

Cell division versus cell elongation: The control of radicle elongation during thermoinhibition of Tagetes minuta achenes

Effective diffusion rates and cross-correlation analysis of “acid growth” data

Water Mobility and Microstructure Evolution in the Germinating Medicago truncatula Seed Studied by NMR Relaxometry. A Revisited Interpretation of Multicomponent Relaxation

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