Dynamics of the contents and distribution of ABA, auxins and aquaporins in developing caryopses of an ABA-deficient barley mutant and its parental cultivar. (Record no. 52247)

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fixed length control field 02623nam a2200301Ia 4500
003 - CONTROL NUMBER IDENTIFIER
control field MX-MdCICY
005 - DATE AND TIME OF LATEST TRANSACTION
control field 20250625160223.0
040 ## - CATALOGING SOURCE
Transcribing agency CICY
090 ## - LOCALLY ASSIGNED LC-TYPE CALL NUMBER (OCLC); LOCAL CALL NUMBER (RLIN)
Classification number (OCLC) (R) ; Classification number, CALL (RLIN) (NR) B-18089
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245 10 - TITLE STATEMENT
Title Dynamics of the contents and distribution of ABA, auxins and aquaporins in developing caryopses of an ABA-deficient barley mutant and its parental cultivar.
490 0# - SERIES STATEMENT
Volume/sequential designation Seed Science Research, 29(4), p.261-269, 2019
520 3# - SUMMARY, ETC.
Summary, etc. Dynamics of abscisic acid (ABA)and indole-3-acetic acid (IAA)contents were followed in developing barley caryopses of the ABA-deficient mutant AZ34 and its parental cultivar Steptoe. Distribution of these hormones and HvPIP2 aquaporins (AQPs)was studied with the help of immunohistochemical methods in the roots and coleorhiza of developing embryos. In Steptoe, maturation of the caryopsis was accompanied by vast accumulation of ABA, while this hormone accumulated more slowly in the caryopsis of AZ34 and its content was lower than in Steptoe. Accumulation of ABA was accompanied by a decline in IAA level in the developing caryopsis, the process being delayed in AZ34 in accordance with the slower accumulation of ABA. ABA accumulated to high levels in the coleorhiza cells of Steptoe, while the effect was absent in AZ34. The high level of ABA was likely to be important for maintaining the barrier function of the coleorhiza, preventing germination of seminal roots and enabling seed dormancy, while the absence of ABA accumulation in coleorhiza of AZ34 may be responsible for the initiation of root germination inside the caryopsis. The abundance of HvPIP2 AQPs in the seminal roots was higher at the beginning of maturation of Steptoe caryopsis and declined afterwards, while the levels of APQs increased later in AZ34 in accordance with the delay in ABA accumulation. These results suggest the importance of ABA accumulation in coleorhiza for preventing precocious growth of seminal roots, and suggest regulation of IAA and aquaporin levels by this hormone during maturation of embryos.
650 14 - SUBJECT ADDED ENTRY--TOPICAL TERM
Topical term or geographic name entry element ABSCISIC ACID
650 14 - SUBJECT ADDED ENTRY--TOPICAL TERM
Topical term or geographic name entry element AQUAPORIN
650 14 - SUBJECT ADDED ENTRY--TOPICAL TERM
Topical term or geographic name entry element AUXIN; BARLEY
650 14 - SUBJECT ADDED ENTRY--TOPICAL TERM
Topical term or geographic name entry element CARYOPSIS DEVELOPMENT
650 14 - SUBJECT ADDED ENTRY--TOPICAL TERM
Topical term or geographic name entry element EMBRYO FORMATION
700 12 - ADDED ENTRY--PERSONAL NAME
Personal name Seldimirova, O. A.
700 12 - ADDED ENTRY--PERSONAL NAME
Personal name Kudoyarova, G. R.
700 12 - ADDED ENTRY--PERSONAL NAME
Personal name Katsuhara, M.
700 12 - ADDED ENTRY--PERSONAL NAME
Personal name Galin, I. R.
700 12 - ADDED ENTRY--PERSONAL NAME
Personal name Zaitsev, D. Y.
700 12 - ADDED ENTRY--PERSONAL NAME
Personal name Kruglova, N. N.
700 12 - ADDED ENTRY--PERSONAL NAME
Personal name Veselov, S. Y.
856 40 - ELECTRONIC LOCATION AND ACCESS
Uniform Resource Identifier <a href="https://drive.google.com/file/d/1hCNuDvdXtrKn24Uy4HSklWgpmrL2RJxl/view?usp=drivesdk">https://drive.google.com/file/d/1hCNuDvdXtrKn24Uy4HSklWgpmrL2RJxl/view?usp=drivesdk</a>
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Source of classification or shelving scheme Clasificación local
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  Clasificación local     Ref1 CICY CICY Documento préstamo interbibliotecario 25.06.2025   B-18089 25.06.2025 25.06.2025 Documentos solicitados