Horticultural Reviews 1999
DOI: 10.1002/9780470650776.ch3
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Triazoles as Plant Growth Regulators and Stress Protectants

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Cited by 228 publications
(310 citation statements)
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“…Similar effects of PBZ on increasing the antioxidant CAT activity have also been observed by other studies (Sankar et al, 2007;Somasundaram et al, 2009 also reported that PBZ-treated plants have a very efficient antioxidative defense mechanism for detoxifying and scavenging of toxic oxygen species through an adoptive mechanism involving upregulation of antioxidative enzymes such as CAT. Therefore, the results in wheat are consistent with the findings by Fletcher (2000), who suggested that triazole compounds induce stress tolerance in plants due to increased antioxidant activity. The H 2 O 2 scavenging system represented by CAT is more important in imparting tolerance than SOD, as reported for oxidative stress in wheat (Sairam et al, 1998).…”
Section: Resultssupporting
confidence: 82%
See 1 more Smart Citation
“…Similar effects of PBZ on increasing the antioxidant CAT activity have also been observed by other studies (Sankar et al, 2007;Somasundaram et al, 2009 also reported that PBZ-treated plants have a very efficient antioxidative defense mechanism for detoxifying and scavenging of toxic oxygen species through an adoptive mechanism involving upregulation of antioxidative enzymes such as CAT. Therefore, the results in wheat are consistent with the findings by Fletcher (2000), who suggested that triazole compounds induce stress tolerance in plants due to increased antioxidant activity. The H 2 O 2 scavenging system represented by CAT is more important in imparting tolerance than SOD, as reported for oxidative stress in wheat (Sairam et al, 1998).…”
Section: Resultssupporting
confidence: 82%
“…The higher chlorophyll content in triazole-treated radish may be related to the influence of triazole on endogenous cytokinin levels. It has been proposed that triazoles stimulate cytokinin synthesis that enhances chloroplast differentiation, chlorophyll biosynthesis and prevents chlorophyll degradation (Fletcher et al, 2000).…”
Section: Resultsmentioning
confidence: 99%
“…Fitorreguladores como o Etil-trinexapac tem retardado o crescimento de plantas, devido à capacidade de reduzir os níveis endógenos da forma ativa de giberelina ácida GA1 (LEITE; CRUSCIOL; SILVA, 2011). Entretanto, o paclobutrazol (PBZ) é um fitorregulador ativo na redução do crescimento de plantas lenhosas (FLETCHER et al, 2000), atuando na inibição da síntese de giberelinas (RADEMACHER, 2000). O PBZ tem se mostrado efetivo quando aplicado via foliar (INTRIERI; SILVESTRONI; PONI, 1986), em concentrações de 500 a 2000 mg L -1 (SANTOS et al, 2004), e via solo (REYNOLDS; WARDLE, 1990), em doses de 200 a 1200 mg planta -1 (CRUZ et al, 2009).…”
Section: Introductionunclassified
“…Em campo aberto, o aumento na concentração de PBZ promoveu reduções lineares na taxa de crescimento absoluto e na altura das plantas, aos 60 dias após o transplantio, enquanto em ambiente protegido, em ambos os casos, as respostas se ajustaram a uma regressão de segundo grau (Tabela 2 e Figura 1), com valores mínimos para concentrações em torno dos 150 mg L -1 . O PBZ inibe a conversão de caureno para ácido caurenóico, reduzindo os níveis de todas as formas de ácidos giberélicos, assim, diminuindo a taxa de elongação e divisão celular (Almeida & Pereira, 1997;Fletcher et al, 2000).…”
Section: Resultsunclassified