Genotypic variations in photosynthetic and physiological adjustment to potassium deficiency in cotton (Gossypium hirsutum)

Wang, Ning; Hua, Han-Bai; Eneji, A. Egrinya; Li, Zhaohu; Liu, Duan; Tian, Xiaoli

doi:10.1016/j.jphotobiol.2012.02.002

Cited by 112 publications

(83 citation statements)

References 45 publications

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“…Potassium deficiency caused a reduction in the photosynthesis and transpiration rates via actuation of stomatal closure in maize (Peaslee and Moss, 1968), thus suppressing plant growth. However, non-stomatal reductions of photosynthesis have been reported in potassium deficient plants (e.g., almond tree, Chinese hickory, and cotton), these are associated with a decline in the chlorophyll content, inhibition of PSII activity, and electron transport (Basile et al, 2003;Jin et al, 2011;Wang et al, 2012). Few studies have examined the effects of reduced potassium supply on photosynthesis in lettuce.…”

Section: Introductionmentioning

confidence: 99%

“…ical reactions of photosynthesis might be disrupted in green leaf lettuce and Boston lettuce under a 1/4 K treatment, leading to a decrease of light absorption and utilization in the leaves (Wang et al, 2012). Reductions of the potassium content in the inner leaves of the three lettuce types showed similar trends as the outer leaves, with the exception of the potassium content in the inner leaves of plants grown under the 1/2 K treatments, which were not significantly decreased in green leaf lettuce and Boston lettuce (Fig.…”

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confidence: 99%

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Plant Growth and Photosynthesis Response to Low Potassium Conditions in Three Lettuce (Lactuca sativa) Types

Zhong¹,

Johkan²,

Hohjo³

et al. 2017

The Hortic J

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Chronic kidney disease has become a major public health problem worldwide. The aim of this study was to investigate the differences in plant growth and photosynthesis among three lettuce (Lactuca sativa) types with different morphological characteristics under low potassium conditions, providing information for improving the method of low-potassium lettuce culture. Lettuce was hydroponically grown in half-strength Enshi formula nutrient solution containing 4, 2, or 1 me·L In green leaf lettuce, reductions in both the net assimilate rate (NAR) and leaf area ratio (LAR) led to a decline in RGR. In Boston lettuce and romaine lettuce, the reduction of RGR was mainly due to a reduction in LAR, and to a lesser extent caused by NAR. Reduced potassium in the nutrient solution had a greater effect on mature leaves than on newly expanded leaves for all three lettuce types. In green leaf lettuce and Boston lettuce, photosynthetic rates of mature leaves significantly decreased under reduced potassium treatments, with a steady or gradually increased intercellular CO 2 concentration; this indicated that non-stomatal factors suppressed photosynthesis. In romaine lettuce, the photosynthetic rate was less influenced by reduced potassium levels in the nutrient solution, and the significant increase observed in leaf mass per area might contribute to maintaining photosynthesis in the leaf. The decrease in photosynthesis in mature leaves exhibited a similar trend to the decreased potassium content in the leaves within the three lettuce types, but the factor related to the reduction of photosynthesis was different.

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Section: Introductionmentioning

confidence: 99%

mentioning

confidence: 99%

Plant Growth and Photosynthesis Response to Low Potassium Conditions in Three Lettuce (Lactuca sativa) Types

Zhong¹,

Johkan²,

Hohjo³

et al. 2017

The Hortic J

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“…Plants have been shown to have genotypic variation in resistance mechanisms that result in differing physiological responses to K ? deficiency (Reddy and Zhao 2005;Wang et al 2012b). George et al (2002) reported genotypic variation in K ?…”

Section: Introductionmentioning

confidence: 99%

Physiological response to potassium deficiency in three sweet potato (Ipomoea batatas [L.] Lam.) genotypes differing in potassium utilization efficiency

et al. 2015

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Potassium (K ? ) is an essential mineral element affecting plant growth and development. The aim of this study was to investigate the physiological response to K ? deficiency in three sweet potato (Ipomoea batatas [L.] Lam.) cultivars with differing K ? utilization efficiencies (KUE). The effects on plant growth status, physiological characteristics, leaf ultrastructure, and photosynthesis were examined. The results showed that K ? deficiency significantly decreased total biomass productivity, root yield, photosynthetic efficiency, and chlorophyll (Chl) content, while increased leaf sucrose and proline content of the three cultivars. K ? deficiency caused acute damage to chloroplast ultrastructure associated with leaf Chl biosynthesis and photosynthate accumulation, and also disturbed the protective enzymes involved in the antioxidative defense system. Compared with the other two cultivars, Xushu32 had higher root yield and better growth performance under K ? deficiency, which was mainly attributed to its high KUE and greater carbohydrate conversion and net photosynthetic efficiency. As a whole, these data suggest that greater tolerance to K ? deficiency among sweet potato genotypes is associated to the capability to mount a stronger physiological stress response during growth.

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“…Wang et al (2012), indican que el metabolismo del N es determinante en el metabolismo de la planta y que se ha observado que las deficiencias de K causan una sustancial reducción en la asimilación del N y reducen la asimilación radicular del NO -3 . Se ha demostrado que el suministro de K aumenta la absorción del NO -3 en raíces, así como el transporte desde la raíz hasta el dosel, por lo que es necesario centrarse en el efecto que la deficiencia de K ejerce sobre el metabolismo de que atribuyeron al aumento en la cantidad de biomasa por unidad de superficie, al desarrollo del área foliar y el aumento de la tasa fotosintética.…”

Section: Resultados Y Discusiónunclassified

“…Las respuestas variables del K podrían explicarse por su efecto sobre el metabolismo de proteínas y aminoácidos que al parecer, dependen del tipo de planta (Hu et al, 2016); algunos autores indican que este metabolismo está conectado con la actividad cambiante de la nitrato reductasa (NR) (Wang et al, 2012) y la glutamina sintetasa (GS) (Ding et al, 2006) ante deficiencias de K.…”

Section: Masa Seca De Hojas (Msh)unclassified

Efecto del nitrógeno y el potasio sobre el intercambio gaseoso y la distribución de biomasa en albahaca (Ocimum basillicum L.)

Combatt¹,

Pérez²,

Jarma‐Orozco³

2018

Rev. Colomb. Cienc. Hortic.

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Efecto del nitrógeno y el potasio sobre el intercambio gaseoso y la distribución de biomasa en albahaca (Ocimum basillicum L.)Effect of nitrogen and potassium on gaseous exchange and biomass distribution in basil (Ocimum basillicum L.) ENRIQUE COMBATT C. RESUMENLa albahaca es considerada una planta promisoria de reciente explotación en Colombia, pero entre las limitaciones para su expansión, se encuentra la implementación de un plan de nutrición con la aplicación de nitrógeno y potasio, que permita el incremento y sostenibilidad de la producción. El objetivo del trabajo fue determinar el efecto de la fertilización con nitrógeno y potasio sobre variables de intercambio gaseoso, ganancia de biomasa e índice de cosecha (IC) de la albahaca (Ocimum basillicum L.) cv. Nufar F1. La investigación fue realizada en condiciones de umbráculo en la Facultad de Ciencias Agrícolas de la Universidad de Córdoba, Colombia. Se utilizó una matriz Box-Berard aumentada 3 (2 k +2k+2k+1+1), para la obtención de combinaciones de nitrógeno y potasio. Las respuestas de intercambio gaseoso evaluadas fueron: tasa de fotosíntesis, conductancia estomática y concentración interna de CO 2 . En cuanto a biomasa, se evaluó masa seca de raíz, tallo, hoja e índice de cosecha. Los resultados más relevantes indicaron que las máximas tasas de fotosíntesis (17,3 μmol CO 2 m -2 s -1 ) fue observada aplicando 190 kg ha -1 N y 12,5 kg ha -1 K, en tanto que la conductancia estomática fue mayor (65,13 mmol CO 2 m -2 s -1 ), con la misma dosis de N pero con dosis de K de 237,5 kg ha -1 . Los valores más altos de masa seca de raíces, tallos y hojas fueron encontradas con las máximas dosis de N (190 kg ha -1 ), aunque para el potasio las combinaciones que incrementaron la mayor acumulación de biomasa en raíces, tallos y hojas fueron 180,69; 237,5 y 12,5 kg ha -1 , respectivamente.Palabras clave adicionales: nutrición mineral, plantas medicinales, variables fisiológicas, masa seca.

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Genotypic variations in photosynthetic and physiological adjustment to potassium deficiency in cotton (Gossypium hirsutum)

Cited by 112 publications

References 45 publications

Plant Growth and Photosynthesis Response to Low Potassium Conditions in Three Lettuce (<i>Lactuca sativa</i>) Types

Plant Growth and Photosynthesis Response to Low Potassium Conditions in Three Lettuce (<i>Lactuca sativa</i>) Types

Physiological response to potassium deficiency in three sweet potato (Ipomoea batatas [L.] Lam.) genotypes differing in potassium utilization efficiency

Efecto del nitrógeno y el potasio sobre el intercambio gaseoso y la distribución de biomasa en albahaca (<i>Ocimum basillicum</i> L.)

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