Differential effects of aluminium on the seedling parameters of wheat

Nasr, N.; Carapetian, Jirair; Heidari, Reza; Rezaei, Siamak Asri; Abbaspour, Nasser; Darvishzadeh, Reza

doi:10.5897/ajb10.145

Cited by 3 publications

(1 citation statement)

References 29 publications

(33 reference statements)

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“…They concluded that among the superoxide dismutase, ascorbate peroxidase (APX), catalase (Cat), and glutathione-S-transferase (GST) enzymes induced by Al stress, catalase and GST may play an important role in the detoxification of reactive oxygen species in Al-tolerant wheat plants. Two wheat cultivars, Darab (Al-sensitive) and Maroon (Al-tolerant) grown on hydroponic solution were used in assessing growth of wheat seedlings under Al stress (Nasr et al, 2011). Results revealed that, for fresh weight of root, fresh weight of shoot, dry weight of shoot and length of root, Al concentrations and their interaction with cultivar were highly significant.…”

Section: Wheat (T Aestivum L)mentioning

confidence: 99%

Aluminum toxicity and tolerance mechanism in cereals and legumes — A review

Arunakumara

Walpola

Yoon

2013

J Korean Soc Appl Biol Chem

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Aluminum (Al), the third most abundant element overall, after silicon and oxygen, is found virtually in all food, air, soil and water. Under acidic conditions, Al is solubilized into [Al(H 2 O) 6 ] 3+ , which is highly toxic to many plant species. Present paper reviewed Al toxicity and tolerance mechanism in agricultural plants with special reference to cereals and legumes. Even at micromolar concentrations, cell division in the root tip meristem in sensitive plants is quickly inhibited by Al 3+ . Expressing the species-dependent manner of response, growth enhancement at low concentrations of Al 3+ is also reported from some plants such as soybean. Plasma membrane can be identified as the primary target of Al toxicity, where production of higher reactive oxygen species and higher fatty acid peroxidation has been observed due to alteration of plasma membrane integrity. Though, toxicity and the mechanisms attributed to Al-resistance are extremely complex phenomena, exclusion is widely accepted as the key mechanism involved in detoxifying Al 3+ . Exudation of chelating ligands, formation of pH barrier at the rhizosphere or at root apoplasm, cell wall immobilization, selective permeability of the plasma membrane, and Al efflux have been proposed as the possible mechanisms for Al exclusion. Al-induced exudation in cereals and legumes is dominated by citrate, malate, and oxalate in varying degrees depending on the species and/or cultivar. Apart from sensitive cultivars, moderately tolerant or tolerant cultivars can also be distinguished from various kinds of cereals and legumes. However, reliable techniques for screening such resistant genotypes have not been developed for any economically important crops.

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Section: Wheat (T Aestivum L)mentioning

confidence: 99%

Aluminum toxicity and tolerance mechanism in cereals and legumes — A review

Arunakumara

Walpola

Yoon

2013

J Korean Soc Appl Biol Chem

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Aluminium

Rehmus,

Bigalke

2004

Bodengefährdende Stoffe: Bewertung ‐ Stoffdaten ‐ Ökotoxikologie ‐ Sanierung

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Elementares Aluminium wurde von Friedrich Wöhler erstmals im Jahre 1827 dargestellt. Der Name Aluminium leitet sich von dem schon im Altertum bekannten und zum Gerben verwendeten Salz Alaun (Aluminium/Kaliumsulfat) ab. Aluminium ist das dritthäufigste Element der Erdkruste und kommt daher in allen Böden in hohen Gehalten vor. Problematisch ist eine hohe gelöste Aluminiumkonzentration in sauren Böden mit pH‐Werte unterhalb von 5.0, was zu Pflanzenschäden führen kann.

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Genotypic Variation in Seedling Tolerance to Aluminum Toxicity in Historical Maize Inbred Lines of Zambia

et al. 2015

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Maize (Zea mays L) is the most important food grain in sub-Saharan Africa and is mostly grown by small-scale farmers under rainfed conditions. Aluminum toxicity caused by low pH is one of the abiotic factors limiting maize production among smallholder farmers. Therefore, breeding maize hybrids that are tolerant to aluminum toxicity will sustain and increase maize production in these areas. Hence this study was undertaken to assess the genotypic variation for aluminum toxicity in maize inbred lines. Fourteen maize inbred lines of historical importance that are used in maize hybrid breeding in Zambia were studied for seedling root variation under different aluminum concentrations using hydroponic conditions. The aluminum tolerance membership index based on three traits (actual root length, relative root length and root length response) classified genotypes L3233 and L1214 as highly tolerant, L5527 and ZM421 as tolerant, and L12, L3234, and ZM521 as intermediate. The high PCV, GCV, and heritability observed for the root traits indicate that opportunities for selection and breeding for aluminum tolerance among Zambian inbred lines exist. Furthermore, the study indicated that a higher genetic gain would be expected from net root growth followed by shoot length response as selection traits, thus supporting the use of root traits for aluminum tolerance screening. OPEN ACCESSAgronomy 2015, 5 201

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Differential effects of aluminium on the seedling parameters of wheat

Cited by 3 publications

References 29 publications

Aluminum toxicity and tolerance mechanism in cereals and legumes — A review

Aluminum toxicity and tolerance mechanism in cereals and legumes — A review

Aluminium

Genotypic Variation in Seedling Tolerance to Aluminum Toxicity in Historical Maize Inbred Lines of Zambia

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