Mode, Site, and Time of Initiation of Hypocotyledonary Bud Primordia in Linum usitatissimum L.

Eggers, Virginia

doi:10.1086/335369

Cited by 36 publications

(2 citation statements)

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“…The worse regeneration suggests costs of resprouting in the case of late disturbance, even when adventitious budding represents lower upfront costs in comparison with axillary buds since adventitious buds are usually formed only after injury (Vesk and Westoby 2004b). When disturbance comes at the time of plant flowering, carbon storage may already be used for generative structures (Sosnová and Klimešová 2009), and moreover, there are anatomical constrains of epidermal bud formation later in development (Link and Eggers 1946). Consequently, we suggest that regeneration from adventitious buds should be preferred in biotopes where disturbance occurs shortly after plant emergence, i.e., in arable lands or river banks.…”

Section: Timing Of Disturbance and Constraints Of Resprouting Strategymentioning

confidence: 99%

“…Anatomical studies of adventitious-bud formation on the hypocotyl of Linum usitatissimum L. (Adams 1924;Crooks 1933;Rauh 1937;Eggers 1946;Link and Eggers 1946;Ishikawa et al 1997) show that sprouting ability diminishes with aging (Crooks 1933;Rauh 1937;Link and Eggers 1946). Moreover, biennials are able to postpone reproduction to the next season when there has been severe disturbance Martínková et al 2008;Piippo et al 2009), whereas strict annuals are not able to do so, and therefore, a late disturbance might hinder seed ripening despite successful regeneration of plants.…”

Section: Introductionmentioning

confidence: 99%

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Compensatory growth of Euphorbia peplus regenerating from a bud bank

Latzel

Malíková

Klimešová

2011

Botany

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Tolerance to very severe disturbance by the annual herb Euphorbia peplus L. was examined. We explored the role of disturbance timing, competition, and site productivity on the performance of disturbed plants. Ninety-three percent of disturbed plants survived following disturbance 14 d after plant emergence, whereas only 48% of disturbed plants survived disturbance 42 d after emergence. Early disturbed plants compensated for biomass loss and had higher fecundity than undisturbed plants, but this was not the case for plants that were disturbed at later times following emergence. Field assessment revealed that disturbed plants were, in general, of the same height as undisturbed plants, even under competition. Undisturbed plants had very conservative architecture across various conditions (competition and nutrients), whereas disturbed plants had more branched architecture under moderate competition and nutrient availability. Accordingly, we suggest that E. peplus utilizes a bet-hedging strategy where adventitious meristems are reserved for regrowth after a severe disturbance event that removes all dormant axillary meristems. Moreover, we propose that the tolerance to disturbance in short-lived species could play an important role in the ecology of disturbed communities. Finally, the tolerance to disturbance could be one of the prerequisites of invasibility of E. peplus in non-native ranges. We also speculate about the potential costs and benefits related with the tolerance to disturbance in short-lived species and about a mechanical control of E. peplus in invaded ranges.Résumé : Les auteurs ont examiné la tolérance aux perturbations sévères chez l'herbacée annuelle Euphorbia peplus. Ils ont exploré le rôle du moment de la perturbation, de la compétition, et de la productivité du site sur la performance des plantes dérangées. Quatre-vingt-treize pour cent des plantes dérangées survivent à une perturbation survenant 14 jours après l'émer-gence, alors que seulement 48% des plantes dérangées survivent à une perturbation survenant 42 jours après l'émergence. Les plantes dérangées précocement compensent la biomasse perdue et montrent une meilleure fécondité que les plantes non perturbées, mais ceci n'est pas le cas chez les plantes dérangées plus tard après leur émergence. Les données prises sur le terrain révèlent que les plantes perturbées sont, en général, de la même hauteur que les plantes non perturbées, même sous l'effet de la compétition. Les plantes non perturbées montrent une architecture conservatrice sous diverses conditions (compétition et nutriments) alors que les plantes dérangées exhibent une architecture plus ramifiée sous une compétition et une disponibilité des nutriments modérées. Conséquemment, les auteurs suggèrent que l'E. peplus utilise une stratégie de plasticité développementale où des méristèmes adventifs sont réservés à une reprise de croissance, suite à une perturbation sévère, même celle conduisant à la perte de tous les bourgeons axillaires dormants. De plus, les auteurs proposent que la tolé...

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Section: Timing Of Disturbance and Constraints Of Resprouting Strategymentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Compensatory growth of Euphorbia peplus regenerating from a bud bank

Latzel

Malíková

Klimešová

2011

Botany

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An Integrated Plant Architecture: Roots, Shoots, and Everything in Between

Klimešová

2021

Annual Plant Reviews Online

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Classical models of tree architecture are based on the development of aboveground stem branching in an ideal tree from early ontogeny to the first flowering. Such attempts hinder the usage of architectural traits for understanding plant ecology, especially for herbs. In this article, the author discusses belowground plant architecture, especially the root system, and its contribution to whole plant architecture during ontogeny and after damage.

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Influence of Ultraviolet Radiation on Auxin‐controlled Plant Growth

Klein

1967

American J of Botany

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Ultraviolet irradiation (254 mμ) of plant test systems results in alterations in growth capacity which can be ascribed to UV‐induced modifications of the ability of plant cells to respond to auxin. This conclusion was reached following study of auxin‐requiring, auxin‐sufficient, and auxin‐surfeit test systems representing cell division, cell enlargement, and cell differentiation. The UV effect was usually reversible by subsequently presented near‐visible or visible radiation.

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Mode, Site, and Time of Initiation of Hypocotyledonary Bud Primordia in Linum usitatissimum L.

Cited by 36 publications

References 0 publications

Compensatory growth of Euphorbia peplus regenerating from a bud bank

Compensatory growth of Euphorbia peplus regenerating from a bud bank

An Integrated Plant Architecture: Roots, Shoots, and Everything in Between

Influence of Ultraviolet Radiation on Auxin‐controlled Plant Growth

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