Hormonal changes in papaya seedlings subjected to progressive water stress and re-watering (Record no. 43487)

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control field 20250625140608.0
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Transcribing agency CICY
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Classification number (OCLC) (R) ; Classification number, CALL (RLIN) (NR) B-9232
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245 10 - TITLE STATEMENT
Title Hormonal changes in papaya seedlings subjected to progressive water stress and re-watering
490 0# - SERIES STATEMENT
Volume/sequential designation Plant Growth Regulation, 53(1), p.43-51, 2007
520 3# - SUMMARY, ETC.
Summary, etc. Changes on abscisic acid (ABA), jasmonic acid (JA)and indole-3-acetic acid (IAA)levels were investigated in papaya seedlings (Carica papaya L.)cv. ''Baixinho de Santa Amalia'' under progressive water stress and subsequent rehydration. Also, the behaviour of leaf gas exchange and leaf growth was determined under stress condition. The results indicated that ABA and JA differ in their pattern of change under water stress. ABA continuously increased in leaves and roots during the whole period of stress whereas JA showed a sharp increase and a later decrease in both organs. Re-watering reduced rapidly (24 h)leaf and root ABA to control levels whereas the influence on JA levels could not be assessed. Drought and recovery did not alter IAA levels in leaf and root tissues of papaya seedlings. In addition, water stress reduced stomatal conductance, photosynthetic rate, transpiration rate, the percentage of attached leaves and leaf growth. Rehydration reverted in few days the effects of stress on leaf growth and gas exchange parameters. Overall, the data suggest that ABA could be involved in the induction of several progressive responses such as the induction of stomatal closure and leaf abscission to reduce papaya water loss. In addition, the pattern of accumulation of JA is compatible with a triggering signal upstream ABA. The unaltered levels of IAA could suggest a certain adaptive ability of papaya to maintain active physiological processes under progressive drought stress.
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 ABSCISSION
650 14 - SUBJECT ADDED ENTRY--TOPICAL TERM
Topical term or geographic name entry element INDOLE-3-ACETIC ACID
650 14 - SUBJECT ADDED ENTRY--TOPICAL TERM
Topical term or geographic name entry element JASMONIC ACID
650 14 - SUBJECT ADDED ENTRY--TOPICAL TERM
Topical term or geographic name entry element LEAF GAS EXCHANGE
650 14 - SUBJECT ADDED ENTRY--TOPICAL TERM
Topical term or geographic name entry element SOIL MOISTURE
700 12 - ADDED ENTRY--PERSONAL NAME
Personal name Mahouachi, J.
700 12 - ADDED ENTRY--PERSONAL NAME
Personal name Arbona, V.
700 12 - ADDED ENTRY--PERSONAL NAME
Personal name Gómez-Cadenas, A.
856 40 - ELECTRONIC LOCATION AND ACCESS
Uniform Resource Identifier <a href="https://drive.google.com/file/d/10_w7T4TlgSbES5-Rw3SGrs33YXXg7OhP/view?usp=drivesdk">https://drive.google.com/file/d/10_w7T4TlgSbES5-Rw3SGrs33YXXg7OhP/view?usp=drivesdk</a>
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  Clasificación local     Ref1 CICY CICY Documento préstamo interbibliotecario 25.06.2025   B-9232 25.06.2025 25.06.2025 Documentos solicitados