Influence of potassium nutrition and the nitrate/ammonium ratio on the putrescine and spermidine contents in banana vitroplants

Zaidan, Humberto Actis; Broetto, Fernando; Oliveira, Emídio Cantídio Almeida de; Gallo, Luiz Antonio; Crocomo, Otto J.

doi:10.1080/01904169909365700

Cited by 5 publications

(1 citation statement)

References 21 publications

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“…As variações entre as concentrações de putrescina observadas entre as plantas cultivadas em solução nutritiva completa e àquelas cultivadas com omissão de K foram semelhantes ao observado em várias espécies (ZAIDAN et al, 1999;FARIDUDDIN et al, 2013) Concentração de putrescina (nmol g Nas folhas das plantas cultivadas em solução nutritiva completa observou-se aumento no acúmulo de putrescina, ao final do período experimental (120 DAT). Esse aumento de putrescina ocorre naturalmente, pois esta amina é percussora do etileno que, por sua vez, constitui em hormônio responsável pelo processo de senescência foliar (SHALABY, 1996;SILLA SANTOS, 1996), observado aos 120 DAT nas plantas de pinhão-manso.…”

Section: Concentração De Poliaminas E Atividade Da Peroxidaseunclassified

Avaliações bioquímicas e fisiológicas para previsão de desordens nutricionais de macronutrientes no desenvolvimento inicial do pinhão-manso

Santos¹

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Section: Concentração De Poliaminas E Atividade Da Peroxidaseunclassified

Avaliações bioquímicas e fisiológicas para previsão de desordens nutricionais de macronutrientes no desenvolvimento inicial do pinhão-manso

Santos¹

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Changes in plant growth substances, contents and flower quality of rose cv. ‘Dolce Vita’ in response to nitrogen sources under soilless culture conditions

Farahi

Kholdebarin

Eshghi

et al. 2019

Journal of Plant Nutrition

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What is the role of putrescine accumulated under potassium deficiency?

Cui

Pottosin

Lamade

et al. 2020

Plant Cell & Environment

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Biomarker metabolites are of increasing interest in crops since they open avenues for precision agriculture, whereby nutritional needs and stresses can be monitored optimally. Putrescine has the potential to be a useful biomarker to reveal potassium (K + ) deficiency. In fact, although this diamine has also been observed to increase during other stresses such as drought, cold or heavy metals, respective changes are comparably low. Due to its multifaceted biochemical properties, several roles for putrescine under K + deficiency have been suggested, such as cation balance, antioxidant, reactive oxygen species mediated signalling, osmolyte or pH regulator. However, the specific association of putrescine build-up with low K + availability in plants remains poorly understood, and possible regulatory roles must be consistent with putrescine concentration found in plant tissues. We hypothesize that the massive increase of putrescine upon K + starvation plays an adaptive role. A distinction of putrescine function from that of other polyamines (spermine, spermidine) may be based either on its specificity or (which is probably more relevant under K + deficiency) on a very high attainable concentration of putrescine, which far exceeds those for spermidine and spermine. putrescine and its catabolites appear to possess a strong potential in controlling cellular K + and Ca 2+ , and mitochondria and chloroplasts bioenergetics under K + stress. K E Y W O R D Sdeficiency, ion balance, polyamines, potassium, putrescine

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Influence of potassium nutrition and the nitrate/ammonium ratio on the putrescine and spermidine contents in banana vitroplants

Cited by 5 publications

References 21 publications

Avaliações bioquímicas e fisiológicas para previsão de desordens nutricionais de macronutrientes no desenvolvimento inicial do pinhão-manso

Avaliações bioquímicas e fisiológicas para previsão de desordens nutricionais de macronutrientes no desenvolvimento inicial do pinhão-manso

Changes in plant growth substances, contents and flower quality of rose cv. ‘Dolce Vita’ in response to nitrogen sources under soilless culture conditions

What is the role of putrescine accumulated under potassium deficiency?

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