Lateral Root Initiation in Cucumber (Cucumis sativus): What Does the Expression Pattern of Rapid Alkalinization Factor 34 (RALF34) Tell Us?

Lateral Root Initiation in Cucumber (Cucumis sativus) : What Does the Expression Pattern of Rapid Alkalinization Factor 34 (RALF34) Tell Us?

Kiryushkin, Alexey S. (author)

Ilina, Elena L. (author)

Guseva, Elizaveta D. (author)

Pawlowski, Katharina, 1961- (author): Stockholms universitet,Institutionen för ekologi, miljö och botanik

Demchenko, Kirill N. (author)

(creator_code:org_t)

2023
2023
English.
In: International Journal of Molecular Sciences. - 1661-6596 .- 1422-0067. ; 24:9

Related links:: https://doi.org/10.3...; show more...; https://urn.kb.se/re...; https://doi.org/10.3...; show less...

Abstract Subject headings

In Arabidopsis, the small signaling peptide (peptide hormone) RALF34 is involved in the gene regulatory network of lateral root initiation. In this study, we aimed to understand the nature of the signals induced by RALF34 in the non-model plant cucumber (Cucumis sativus), where lateral root primordia are induced in the apical meristem of the parental root. The RALF family members of cucumber were identified using phylogenetic analysis. The sequence of events involved in the initiation and development of lateral root primordia in cucumber was examined in detail. To elucidate the role of the small signaling peptide CsRALF34 and its receptor CsTHESEUS1 in the initial stages of lateral root formation in the parental root meristem in cucumber, we studied the expression patterns of both genes, as well as the localization and transport of the CsRALF34 peptide. CsRALF34 is expressed in all plant organs. CsRALF34 seems to differ from AtRALF34 in that its expression is not regulated by auxin. The expression of AtRALF34, as well as CsRALF34, is regulated in part by ethylene. CsTHESEUS1 is expressed constitutively in cucumber root tissues. Our data suggest that CsRALF34 acts in a non-cell-autonomous manner and is not involved in lateral root initiation in cucumber.

NATURVETENSKAP -- Biologi -- Botanik (hsv//swe)
NATURAL SCIENCES -- Biological Sciences -- Botany (hsv//eng)
NATURVETENSKAP -- Biologi -- Biokemi och molekylärbiologi (hsv//swe)
NATURAL SCIENCES -- Biological Sciences -- Biochemistry and Molecular Biology (hsv//eng)

By the author/editor: Kiryushkin, Alex ...; Ilina, Elena L.; Guseva, Elizavet ...; Pawlowski, Katha ...; Demchenko, Kiril ...

About the subject

NATURAL SCIENCES: NATURAL SCIENCES; and Biological Scien ...; and Biochemistry and ...

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