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oai:gredos.usal.es:10366/1569582025-04-30T20:42:04Zcom_10366_156461com_10366_4512com_10366_3823col_10366_156462

Sánchez, Ma Angeles Mateos, Isabel Labrador, Emilia Dopico, Berta 2024-04-03T06:39:30Z 2024-04-03T06:39:30Z 2004 0981-9428 http://hdl.handle.net/10366/156958 10.1016/j.plaphy.2004.07.004 Four different cDNAs encoding a-expansins have been identified in Cicer arietinum (Ca-EXPA1, Ca-EXPA2, Ca-EXPA3 and Ca-EXPA4). The shared amino acid sequence similarity among the four a-expansin proteins ranged from 67 to 89%. All of them display common characteristics such as molecular mass (around 24 kDa), amino acid numbers, and also the presence of a signal peptide. The transcription pattern of chickpea a-expansin genes in seedlings and plants suggests a specific role for each of the four a-expansins in different phases of development or in different plant organs. High levels of Ca-EXPA2 transcripts coincide with maximum epicotyl and stem growth, indicating an important involvement of this particular a-expansin in elongating tissues. Ca-EXPA3 would be related to radicle development, while Ca-EXPA4 seems to be involved in pod development.A considerable increase in the level of all Ca-EXPA transcripts accompanied the indole acetic acid (IAA) plus brassinolide (BR)-induced elongation of excised epicotyl segments. This IAA + BR induction was seen even for the chickpea expansin genes whose transcription was not affected by IAA or BR alone. eng http://creativecommons.org/licenses/by-nc-nd/4.0/ info:eu-repo/semantics/openAccess Attribution-NonCommercial-NoDerivatives 4.0 Internacional Brassinolides Cell wall Cicer arietinum Epicotyl Expansin Growth Brassinolides and IAA induce the transcription of four α-expansin genes related to development in Cicer arietinum info:eu-repo/semantics/article