Effects of excess soil manganese on stomatal function in two soybean cultivars

Suresh, Rahul; Foy, C. D.; Weidner, J. R.

doi:10.1080/01904168709363606

Cited by 27 publications

(13 citation statements)

References 7 publications

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“…Atafar et al [29] stated that Cd, Pb, and As content was signi cantly (p<0.05) augmented after applying chemical fertilizers in the soil. A similar nding was also observed in the study of Nicholson et al 2003 [30,31].…”

Section: Discussionsupporting

confidence: 87%

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Ecological Risk of Heavy Metal in Agricultural Soil and Transfer to Rice Grains

Mahmud

Salam

Khan

et al. 2020

Preprint

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Higher accumulation of toxic heavy metals in rice grain and agricultural soil may lead to an imbalanced ecosystem. The present study was carried out to assess the risk of different heavy metals nickel, copper, arsenic, lead, and manganese in agricultural soil and transfer status to rice grain. The samples were collected from four agricultural fields at different times in the Dumuria Upazila (sub-district) under Khulna district in Bangladesh. Heavy metal concentration in soil extracts, irrigation water samples, and grain samples was determined by Atomic Absorption Spectrometry (AAS). Average metal concentrations were calculated and compared with the reference value in soil. In most of the cases, the existence of heavy metals in agricultural soil was greater than the reference soil which is a rising concern. Overall risk index (RI) stated that the examined soils were at moderate risk of contamination. Transfer factor (TF) of Arsenic (0.037 to 0.115) and Manganese (0.056 to 0.155) from soil to rice grain were higher that is also a matter of concern. On the other hand, TF of Lead (Pb) was found in a very negligible amount which is a good sign. Regular monitoring of heavy metals in agricultural soil should be initiated and the awareness level should be increased to avoid environmental problems.

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Section: Discussionsupporting

confidence: 87%

“…Mn not only creates a negative impact on human health but also induces the plant function. Suresh et al 2008 observed that excess soil Mn disrupts stomatal function in two soybean cultivars [31]. Mn also causes human lung injury like cough, bronchitis, pneumonitis along with damages lung [32].…”

Section: Discussionmentioning

confidence: 99%

Ecological Risk of Heavy Metal in Agricultural Soil and Transfer to Rice Grains

Mahmud

Salam

Khan

et al. 2020

Preprint

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“…O excesso de Mn causa alterações fisiológicas na planta como o fechamento estomatal, o que diminui as taxas de transpiração (Suresh et al, 1987 esse FMA aumentou o conteúdo de Mn nas raízes das plantas expostas ao excesso de Mn e por isso sua translocação para a parte aérea foi diminuída, resultando em menor teor. Isso pode ter contribuído para o maior crescimento das plantas, resultando em maior eficiência micorrízica.…”

Section: Resultados E Discussão Experimento 1 Absorção E Translocaçãunclassified

Absorção e translocação de manganês por plantas de soja micorrizadas, sob doses crescentes deste nutriente

Cardoso

Navarro

Nogueira

2003

Rev. Bras. Ciênc. Solo

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“…Ohki (1985) found that decline in transpiration rate followed a decline in chlorophyll concentration and in CO2 assimilation. Suresh et al (1987) reported that mean stomatal conductance values decreased as the concentration of added Mn increased, resulting in lower transpiration rates, and differences among contrasting soybean cultivars were detected. However, in the study reported by Suresh et al (1987) measurements in stomatal conductance began 10 days after the plants were grown under Mn stress, and were prolonged for a period of a week.…”

Section: Co2 Assimilationmentioning

confidence: 99%

“…Suresh et al (1987) reported that mean stomatal conductance values decreased as the concentration of added Mn increased, resulting in lower transpiration rates, and differences among contrasting soybean cultivars were detected. However, in the study reported by Suresh et al (1987) measurements in stomatal conductance began 10 days after the plants were grown under Mn stress, and were prolonged for a period of a week. The authors concluded that their study demonstrated that Mn toxicity interferes with stomatal function.…”

Section: Co2 Assimilationmentioning

confidence: 99%

Effects of manganese toxicity on leaf CO2 assimilation of contrasting common bean genotypes

González¹,

Lynch²

1997

Physiol Plant

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1997. Effects of manganese toxicity on leaf CO2 assimilation of contrasting common bean genotypes. -Physiol. Plant. 101: 872-880.Parameters related to leaf photosynthesis were evaluated in three genotypes of common bean {Phaseolus vulgaris L.) with contrasting tolerance to Mn toxicity. Two short-term studies in solution culture were used to assess the effect of excess Mn on CO2 assimilation in mature and immature leaves. Mn toxicity decreased total chlorophyll content only in immature leaves, with a consequent reduction of leaf CO2 assimilation. Mature leaves that showed brown speckles characteristic of Mn toxicity, did not suffer any detriment in their capacity to assimilate CO2, at least in a 4-day experiment. Stomatal conductance and transpiration were not affected by the presence of high levels of Mn in leaf tissue. Lower stomatal conductance and transpiration rates were observed only in leaves with advanced chlorosis. Differences among genotypes were detected as increased chlorosis in the more sensitive genotype ZPV-292, followed by A-283 and less chlorosis in the tolerant genotype CALIMA. Since CO2 assimilation expressed per unit of chlorophyll was not different between high-Mn plants and control plants, we conclude that the negative effect of Mn toxicity on CO2 assimilation can be explained by a reduction in leaf chlorophyll content.

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Effects of excess soil manganese on stomatal function in two soybean cultivars

Cited by 27 publications

References 7 publications

Ecological Risk of Heavy Metal in Agricultural Soil and Transfer to Rice Grains

Ecological Risk of Heavy Metal in Agricultural Soil and Transfer to Rice Grains

Absorção e translocação de manganês por plantas de soja micorrizadas, sob doses crescentes deste nutriente

Effects of manganese toxicity on leaf CO2 assimilation of contrasting common bean genotypes

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