Potassium contributes to zinc stress tolerance in peach (Prunus persica) seedlings by enhancing photosynthesis and the antioxidant defense system

Zz, Song; Cl, Duan; Sl, Guo; Yang, Yadong; Yf, Feng; Rj, Ma; Yu, Mao-Hong

doi:10.4238/2015.july.27.22

Cited by 41 publications

(23 citation statements)

References 39 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…K also plays a remarkable role in development of photosynthetic pigments by preventing degradation of newly formed Chl and aminolevulinic acid (ALA) (Siddique et al, 2012 ). Song et al ( 2015 ) also reported that application of K enhanced the photosynthetic efficiency by increasing chlorophyll content in zinc stressed P. persica . Thus, the improvements in photosynthetic pigments are due to the combined effect of Ca and K that provides tolerance to C. arietinum plants against Cd stress (Figure 3 ).…”

Section: Discussionmentioning

confidence: 94%

“…Deficiency of K in plants has been reported to decrease the rate of net photosynthesis and ribulose-1, 5-bisphosphate carboxylase activity (Cakmak, 2005 ; Weng et al, 2007 ). Song et al ( 2015 ) have reported that application of K restricted the fresh weight of peach ( Prunus persica ) seedlings under Zn-toxicity. According to the present study Ca and K in combination proved to be more effective than individual Ca and K and the results are in conformity with the finding of Siddique et al ( 2012 ) in Vicia faba under Cd toxicity.…”

Section: Discussionmentioning

confidence: 99%

See 1 more Smart Citation

Calcium and Potassium Supplementation Enhanced Growth, Osmolyte Secondary Metabolite Production, and Enzymatic Antioxidant Machinery in Cadmium-Exposed Chickpea (Cicer arietinum L.)

et al. 2016

View full text Add to dashboard Cite

This work examined the role of exogenously applied calcium (Ca; 50 mM) and potassium (K; 10 mM) (alone and in combination) in alleviating the negative effects of cadmium (Cd; 200 μM) on growth, biochemical attributes, secondary metabolites and yield of chickpea (Cicer arietinum L.). Cd stress significantly decreased the length and weight (fresh and dry) of shoot and root and yield attributes in terms of number of pods and seed yield (vs. control). Exhibition of decreases in chlorophyll (Chl) a, Chl b, and total Chl was also observed with Cd-exposure when compared to control. However, Cd-exposure led to an increase in the content of carotenoids. In contrast, the exogenous application of Ca and K individually as well as in combination minimized the extent of Cd-impact on previous traits. C. arietinum seedlings subjected to Cd treatment exhibited increased contents of organic solute (proline, Pro) and total protein; whereas, Ca and K-supplementation further enhanced the Pro and total protein content. Additionally, compared to control, Cd-exposure also caused elevation in the contents of oxidative stress markers (hydrogen peroxidase, H2O2; malondialdehyde, MDA) and in the activity of antioxidant defense enzymes (superoxide dismutase, SOD; catalase, CAT; ascorbate peroxidase, APX; glutathione reductase, GR). Ca, K, and Ca + K supplementation caused further enhancements in the activity of these enzymes but significantly decreased contents of H2O2 and MDA, also that of Cd accumulation in shoot and root. The contents of total phenol, flavonoid and mineral elements (S, Mn, Mg, Ca and K) that were also suppressed in Cd stressed plants in both shoot and root were restored to appreciable levels with Ca- and K-supplementation. However, the combination of Ca + K supplementation was more effective in bringing the positive response as compared to individual effect of Ca and K on Cd-exposed C. arietinum. Overall, this investigation suggests that application of Ca and/or K can efficiently minimize Cd-toxicity and eventually improve health and yield in C. arietinum by the cumulative outcome of the enhanced contents of organic solute, secondary metabolites, mineral elements, and activity of antioxidant defense enzymes.

show abstract

Section: Discussionmentioning

confidence: 94%

Section: Discussionmentioning

confidence: 99%

Calcium and Potassium Supplementation Enhanced Growth, Osmolyte Secondary Metabolite Production, and Enzymatic Antioxidant Machinery in Cadmium-Exposed Chickpea (Cicer arietinum L.)

et al. 2016

View full text Add to dashboard Cite

show abstract

“…In peach ( Prunus persica cv. “Yochihime”), elevated external K alleviated zinc toxicity, which was attributed to K contributing to improvements in internal K homeostasis (Song et al, ) and also protected garden cress ( Lepidium sativum Linn.) against arsenic toxicity (Umar et al, ).…”

Section: Discussionmentioning

confidence: 99%

Potassium amendment increases biomass and reduces heavy metal concentrations in Lablab purpureus after phosphate mining

et al. 2017

View full text Add to dashboard Cite

Agricultural pursuits in post‐mining environments are becoming increasingly important globally as many regions are challenged with food insecurity and post‐mining land‐use legacies. Although there are many advantages for agricultural production at post‐mining sites, these substrates have abiotic and biotic challenges for plant growth, including poor fertility, heavy metals, and lack of beneficial soil microbes. We investigated whether increased potassium (K) levels in a post‐phosphate mining substrate on Christmas Island, Australia, could improve plant productivity and reduce heavy metal concentrations. Addition of K (80 and 160 kg ha−1) significantly increased plant biomass and enhanced root growth and mycorrhizal fungal colonisation rates. Potassium amendment was also strongly correlated with lower heavy metal concentrations in leaf material. Clearly, K is the critical limiting nutrient for legumes in post‐phosphate mining sites on Christmas Island for enhancing biomass and health. We hypothesise that heavy metals were either being diluted in a larger biomass and/or healthy plants could also select against heavy metal uptake; however, this requires further investigation of the mechanisms involved. These results have significant global ramifications for sites transitioning from mining to agriculture.

show abstract

“…Entretanto, quando se aumentou a concentração de Cd residual na solução (mais alto que 0,5 mmol L -1 ), as variações nos valores de E e gs não dependeram do suprimento de K (Figuras 13 F e 14 C). Yield1= 0,1324+0,0099K-0,00018K 2 -0,0045CdK -0,0612Cd+0,0308Cd 2 R 2 = 0,82 Yield2= 0,1089+0,0037K-0,00009K 2 -0,0027CdK +0,1250Cd-0,0572Cd 2 R 2 = 0,58 (Song et al 2015).…”

Section: Trocas Gasosas E Fluorescênciaunclassified

“…Entretanto, os efeitos tóxicos do Cd podem comprometer a produção de biomassa e até mesmo a sobrevivência do capim.A otimização do manejo nutricional interfere positivamente na capacidade de tolerância das plantas expostas aos metais pesados, inclusive do capim tanzânia, pois incrementa a produção de biomassa e consequentemente a eficiência da fitoextração de Cd(Gilabel et al 2014;Nazar et al 2012;. O K é um macronutriente que atua em processos fisiológicos e bioquímicos que atenuam a severidade da toxidez por metais pesados, ao promover o aumento da taxa fotossintética e o incremento da atividade de enzimas antioxidantes(Song et al 2015;Umar et al 2013;. relataram que o fornecimento de K para plantas de grão de bico (Cicer arietinum) expostas ao Cd proporcionou mais baixo conteúdo de H2O2 e MDA devido a mais elevada atividade de enzimas antioxidantes (SOD, CAT, APX e GR).O metabolismo do K também está relacionado ao conteúdo de compostos nitrogenados orgânicos de baixo peso molecular, como as poliaminas putrescina (PUT), espermidina (SPD) e espermina (SPM)(Santos et al 2017).…”

unclassified

Potássio na amenização dos efeitos tóxicos induzidos pelo cádmio no capim tanzânia

Anicésio¹

View full text Add to dashboard Cite

Potassium contributes to zinc stress tolerance in peach (Prunus persica) seedlings by enhancing photosynthesis and the antioxidant defense system

Cited by 41 publications

References 39 publications

Calcium and Potassium Supplementation Enhanced Growth, Osmolyte Secondary Metabolite Production, and Enzymatic Antioxidant Machinery in Cadmium-Exposed Chickpea (Cicer arietinum L.)

Calcium and Potassium Supplementation Enhanced Growth, Osmolyte Secondary Metabolite Production, and Enzymatic Antioxidant Machinery in Cadmium-Exposed Chickpea (Cicer arietinum L.)

Potassium amendment increases biomass and reduces heavy metal concentrations in Lablab purpureus after phosphate mining

Potássio na amenização dos efeitos tóxicos induzidos pelo cádmio no capim tanzânia

Contact Info

Product

Resources

About