Organ‐specific phytohormone synthesis in two Geranium species with antithetical responses to far‐red light enrichment

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61389030%3A_____%2F18%3A00501605" target="_blank" >RIV/61389030:_____/18:00501605 - isvavai.cz</a>

Alternative codes found

RIV/61989592:15310/18:73591474

Result on the web

<a href="http://dx.doi.org/10.1002/pld3.66" target="_blank" >http://dx.doi.org/10.1002/pld3.66</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1002/pld3.66" target="_blank" >10.1002/pld3.66</a>

Result language

angličtina

Original language name

Organ‐specific phytohormone synthesis in two Geranium species with antithetical responses to far‐red light enrichment

Original language description

Plants growing in high densities experience a reduced red (R) to far‐red (FR) light ratio and shade‐intolerant species respond with accelerated elongation growth to reach the top of the canopy: the shade avoidance syndrome (SAS). FR‐enriched light inactivates phytochrome photoreceptors, which results in subsequent action of several plant hormones regulating growth. SAS is adaptive for shade‐intolerant plants, but is suppressed in shade‐tolerant plant species. Inspired by a previously published transcriptome analysis, we use two species of the genus Geranium here to study the involvement of auxin, brassinosteroids (BRs), and gibberellins (GAs) in supplemental FR‐induced elongation growth. G. pyrenaicum, a shade‐avoiding species, strongly induces auxin and gibberellin levels, but not BR, in elongating petioles. We show that, in this species, FR light perception, hormone synthesis, and growth are local and restricted to the petiole, and not the leaf lamina. Using chemical hormone inhibitors, we confirm the essential role of auxin and GAs in supplemental FR‐induced elongation growth. Shade‐tolerant G. robertianum does not display the change in hormone levels upon FR light enrichment, resulting in the lack of a shade avoidance response.

Czech name

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Czech description

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Type

J_ost - Miscellaneous article in a specialist periodical

CEP classification

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OECD FORD branch

10611 - Plant sciences, botany

Project

<a href="/en/project/LO1204" target="_blank" >LO1204: Sustainable development of research in the Centre of the Region Haná</a><br>

Continuities

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Publication year

2018

Confidentiality

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Name of the periodical

PLANT DIRECT

ISSN

2475-4455

e-ISSN

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Volume of the periodical

2

Issue of the periodical within the volume

8

Country of publishing house

US - UNITED STATES

Number of pages

12

Pages from-to

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UT code for WoS article

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EID of the result in the Scopus database

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