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Registro Completo |
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Biblioteca(s): |
Embrapa Mandioca e Fruticultura. |
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Data corrente: |
14/05/1993 |
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Data da última atualização: |
14/05/1993 |
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Autoria: |
ARIMOTO, Y.; HOMMA, Y.; MISATO, T. |
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Afiliação: |
The Institute of Physical and Chemical Research, 2-1, Hirosawa, Wakoshi, Saitama 351, Japan. |
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Título: |
The significance of the callus formation on citrus |
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Ano de publicação: |
0 |
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Fonte/Imprenta: |
Tokyo, Japan: International Society of citricultural, l981 |
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Volume: |
v.1 |
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Páginas: |
p.374-379 |
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Idioma: |
Inglês |
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Conteúdo: |
Two types of callus developed on damaged citrus. One was formed by infection of Diaporthe citri. Damaged cells swelled on the upper surface of tissue and callus was formed by the action of some wound hormones between healthy tissues and damaged cells. Damaged cells, including the invaded pathogen, were then separated by the formation of a corky layer. Thus the citrus plant was protected from the spread of the pathogen. Another type of callus was formed by the action of ethylene. In a chamber with ethylene (100 ppm), callus, made of free cells, was produced at the base of the leaf and petiole, node of shoots and around the bud and thorn. The callus, made of free cells, induced tip dieback. The callus multiplied readily at the area of separation, but not at thebase of the separated organs. Therefore, both types of callus which were formed by the action of some wound hormones or by ethylene, may be responsible for the protecting reaction of citrus against damage by plant pathogens. |
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Palavras-Chave: |
Abnormal cell division; Abnormal cell elongation; Self-protection; Wound hormone. |
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Thesagro: |
Diaporthe Citri; Melanose. |
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Thesaurus Nal: |
ethylene. |
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Categoria do assunto: |
-- |
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Marc: |
LEADER 01648naa a2200253 a 4500
001 1643996
005 1993-05-14
008 bl uuuu u00u1 u #d
100 1 $aARIMOTO, Y.
245 $aThe significance of the callus formation on citrus
260 $c0
300 $ap.374-379 v.1
490 $vv.1
520 $aTwo types of callus developed on damaged citrus. One was formed by infection of Diaporthe citri. Damaged cells swelled on the upper surface of tissue and callus was formed by the action of some wound hormones between healthy tissues and damaged cells. Damaged cells, including the invaded pathogen, were then separated by the formation of a corky layer. Thus the citrus plant was protected from the spread of the pathogen. Another type of callus was formed by the action of ethylene. In a chamber with ethylene (100 ppm), callus, made of free cells, was produced at the base of the leaf and petiole, node of shoots and around the bud and thorn. The callus, made of free cells, induced tip dieback. The callus multiplied readily at the area of separation, but not at thebase of the separated organs. Therefore, both types of callus which were formed by the action of some wound hormones or by ethylene, may be responsible for the protecting reaction of citrus against damage by plant pathogens.
650 $aethylene
650 $aDiaporthe Citri
650 $aMelanose
653 $aAbnormal cell division
653 $aAbnormal cell elongation
653 $aSelf-protection
653 $aWound hormone
700 1 $aHOMMA, Y.
700 1 $aMISATO, T.
773 $tTokyo, Japan: International Society of citricultural, l981
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Embrapa Mandioca e Fruticultura (CNPMF) |
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