Boron toxicity in barley (Hordeum vulgare L.) seedlings in relation to soil temperature

Mahalakshmi, V.; Yau, S. K.; Ryan, John; Peacock, J. M.

doi:10.1007/bf00010121

Cited by 26 publications

(12 citation statements)

References 13 publications

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“…Torun et al (2006) evaluated genotypic variation in tolerance to B toxicity in 70 durum wheat (Triticum durum) genotypes and found that there was no relationship between shoot B concentrations and relative decreases in shoot dry weight caused by B toxicity, but the most B-sensitive genotypes generally had much lower amount of B in shoot than the genotypes showing higher tolerance to B toxicity. Similar results were also shown in bread wheat (Triticum aestivum; Kalayci et al, 1998) and in barley (Hordeum vulgare L; Mahalakshmi et al, 1995;Torun et al, 2003): The tolerant cultivars maintained high levels of B in shoots or/and roots. It was further speculated by Kaur et al (2006a) that formation of B-polyol complexes in the vacuoles would be an effective way of storing B without damage to cellular metabolism.…”

Section: Discussionsupporting

confidence: 78%

“…However, the mechanism may be associated with the inherent ability to tolerate excessive B concentration in plant tissues. It was suggested by several studies that the internal compartmentation of B in vacuoles is a plausible explanation for B tolerance (Torun et al, 2003(Torun et al, , 2006Mahalakshmi et al, 1995). Torun et al (2006) evaluated genotypic variation in tolerance to B toxicity in 70 durum wheat (Triticum durum) genotypes and found that there was no relationship between shoot B concentrations and relative decreases in shoot dry weight caused by B toxicity, but the most B-sensitive genotypes generally had much lower amount of B in shoot than the genotypes showing higher tolerance to B toxicity.…”

Section: Discussionmentioning

confidence: 99%

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Effects of excess boron on growth, gas exchange, and boron status of four orange scion–rootstock combinations

Sheng

Zhou

Wei

et al. 2010

Z. Pflanzenernähr. Bodenk.

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Field observations indicate that boron (B)-toxicity symptoms may occur in citrus plants from inappropriate foliar spraying or overfertilizing with B especially under low-rainfall conditions, where B can accumulate to levels that become toxic to plant growth. Previous work has indicated that different rootstocks can greatly influence the scion's tolerance to B toxicity, however, little is known about the response of different citrus scion-rootstock combinations to excess-B conditions. In the present study, we investigated the effects of excess B on plant growth, gas exchange, B concentration, and distribution of four scion-rootstock combinations, Newhall and Skagg's Bonanza navel orange (Citrus sinensis Osb.) scions grafted on Carrizo citrange (C. sinensis L. Osb. × Poncirus trifoliata L. Raf.) and Trifoliate orange (Poncirus trifoliata L. Raf.) rootstocks. One-year-old plants of the four scion-rootstock combinations were grown for 183 d in sand-perlite (1 : 1, v/v) medium under greenhouse conditions. The plants were irrigated with half-strength Hoagland's nutrient solution containing two B concentrations, 0.25 (control) and 2.50 (excess B) mg L -1 . It was found that, apart from the combination of Newhall grafted on Carrizo citrange, the dry weights in various parts of the other three combinations were reduced by the excess-B treatment. Furthermore, the plants of Skagg's Bonanza grafted on Carrizo citrange showed the highest growth reduction amongst the four scion-rootstock combinations. In most cases, the greater reductions in dry weight were found in roots as compared to the other plant parts under excess-B conditions, indicating that roots were more sensitive to B toxicity than the other tissues. In the case of Newhall plants grafted on Carrizo citrange, the entire plant growth was increased by excess-B treatment. Boron concentrations in all plants parts increased significantly by increasing the B supply in the nutrient solution. Leaves were the dominant sites of B accumulation and showed the greatest increase in B concentration compared to the other plant parts, as B concentration in the nutrient solution increased. Our results indicate that the combination of Newhall grafted on Carrizo citrange was more tolerant to B toxicity, while the combination of Skagg's Bonanza grafted on Carrizo citrange was relatively more sensitive to B toxicity, in comparison with the other scion-rootstock combinations. However, Newhall plants contained more B in leaves and in roots than Skagg's Bonanza plants when they were both grafted on Carrizo citrange, indicating that the mechanism underlying such great differential growth responses of the two scion-rootstock combinations to B toxicity may not be associated with B exclusion from roots or reduced translocation of B to shoots. Furthermore, B distribution in different plant parts implied that the mechanism was also unlikely related to altered distributions of accumulated B in plant tissues. However, inherent ability to tolerate excessive B concentration in plant tissues...

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Section: Discussionsupporting

confidence: 78%

Section: Discussionmentioning

confidence: 99%

Effects of excess boron on growth, gas exchange, and boron status of four orange scion–rootstock combinations

Sheng

Zhou

Wei

et al. 2010

Z. Pflanzenernähr. Bodenk.

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“…This finding is supported by research showing that 30-day-tomato seedlings died 5 days after being transplanted into soil containing high B (165-195 mg/kg) caused by contamination by wastewater from rubber wood factories 17 . Because of the high leaching rate, B is rarely accumulated in soil especially in areas receiving plentiful rainfall 1,18 . The alleviation of B concentrations in soils contaminated with B from fly ash by leaching has been found to be feasible 19 and the application of leaching by water can decrease B in the top soil significantly (Fig.…”

Section: Discussionmentioning

confidence: 99%

Untitled

Onthong¹,

Yoajui²,

Kaewsichan³

2011

ScienceAsia

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Wastewater from rubber wood furniture factories contains large amounts of boron (B) which contaminates the soil and causes unusual symptoms in plants in the area. We aim to establish the toxicity effects in tomato seedlings planted in Kho Hong (Kh) soil series irrigated with wastewater and compare them with seedlings grown in the same soil series but receiving tap-water containing B, S, Ca, or Na at the same concentrations as found in the wastewater. Then, we study B leaching from B-contaminated soil in a column by applying distilled water at different rates. We alleviate the B contamination in the Kh soil series by using water to leach out the B, then planting tomato seedlings. The results showed that in plants subjected to the wastewater or B treatments, growth was reduced and the plants showed tip and marginal chlorosis and necrosis of mature leaves at high B concentrations. The boron in B-contaminated soil was decreased to a greater degree by the application of a larger amounts of leaching water. Using 167.5 mm (field capacity) of water leached the B in the topsoil (0-15 cm) from a concentration of 11.11 mg/kg down to 2.83 mg/kg, a nontoxic level (< 3 mg/kg), and the leached B accumulated in the subsoil (15-30 and 30-50 cm). However, using 1000, 2000, or 4000 mm of water leached the B from the soil to below a toxic level with only a slight accumulation in the subsoil. This indicates that applying water to leach B from soil decreased the extractable B to below a toxic level, resulting in a decrease in plant B uptake. As a result, the tomato seedlings showed better growth in terms of height, leaf number, and plant dry weight than those of the control treatment.

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“…Subsequent greenhouse screening tests showed that cereals varied with respect to sensitivity, with considerable genetic variability within any one cereal group (Mahalaksmi et al 1995;Yau, Nachit, and Ryan, 1997). Landraces were shown to be more tolerant to toxicity than introduced, improved cultivars.…”

Section: Micronutrientsmentioning

confidence: 98%

Application of Soil and Plant Analysis for Applied Research and Development in West Asia–North Africa: An International Center's Perspective

Ryan

Rashid

2006

Communications in Soil Science and Plant Analysis

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The networks of 15 international research centers around the globe that are sponsored by the Consultative Group for International Agricultural Research (CGIAR) seeks to alleviate poverty in the developing world through enhanced production, while maintaining biodiversity and the sustainability of natural resources. The mandate of the International Center for Agricultural Research in the Dry Areas (ICARDA) is to focus on improving semi-arid cropping systems in the drought-prone West Asia and North Africa region. Since its inception in 1997, ICARDA's soil laboratory played a pivotal role in backstopping the institution's onstation and on-farm research in Syria and its collaborative research with the region's national programs. This article gives an overview of the evolution of soil and plant analysis in serving the center's mission. A major effort was the regional soil test calibration program, which set the basis for rational use of fertilizers and the identification of related nutrient constraints. Such analyses were extensively employed in all the long-term dryland cropping system trials and later in irrigated agriculture and the interface between plant nutrition and crop breeding. Major emphasis was given to improving and upgrading analytical services in the region's laboratories.

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Boron toxicity in barley (Hordeum vulgare L.) seedlings in relation to soil temperature

Cited by 26 publications

References 13 publications

Effects of excess boron on growth, gas exchange, and boron status of four orange scion–rootstock combinations

Effects of excess boron on growth, gas exchange, and boron status of four orange scion–rootstock combinations

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Application of Soil and Plant Analysis for Applied Research and Development in West Asia–North Africa: An International Center's Perspective

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