Screening wheat and other small grains for acid soil tolerance

Bóna, L.; Wright, Robert J.; Baligar, V. C.; Matuz, J.

doi:10.1016/0169-2046(93)90046-g

Cited by 39 publications

(16 citation statements)

References 14 publications

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“…-toxicity, and variability is found between plant species, as well as between cultivars or genotypes (Foy 1988;Moustakas et al 1992;Bona et al 1993). -toxicity, and variability is found between plant species, as well as between cultivars or genotypes (Foy 1988;Moustakas et al 1992;Bona et al 1993).…”

Section: Introductionmentioning

confidence: 99%

Aluminum resistance in wheat involves maintenance of leaf Ca2+ and Mg2+ content, decreased lipid peroxidation and Al accumulation, and low photosystem II excitation pressure

Moustaka

Ouzounidou²,

Bayçu

et al. 2016

Biometals

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The phytotoxic aluminum species (Al(3+)) is considered as the primary factor limiting crop productivity in over 40 % of world's arable land that is acidic. We evaluated the responses of two wheat cultivars (Triticum aestivum L.) with differential Al resistance, cv. Yecora E (Al-resistant) and cv. Dio (Al-sensitive), exposed to 0, 37, 74 and 148 μM Al for 14 days in hydroponic culture at pH 4.5. With increasing Al concentration, leaf Ca(2+) and Mg(2+) content decreased, as well as the effective quantum yield of photosystem II (PSII) photochemistry (Φ PSII ), while a gradual increase in leaf membrane lipid peroxidation, Al accumulation, photoinhibition (estimated as F v /F m ), and PSII excitation pressure (1 - q p ) occurred. However, the Al-resistant cultivar with lower Al accumulation, retained larger concentrations of Ca(2+) and Mg(2+) in the leaves and kept a larger fraction of the PSII reaction centres (RCs) in an open configuration, i.e. a higher ratio of oxidized to reduced quinone A (QA), than plants of the Al-sensitive cultivar. Four times higher Al concentration in the nutrient solution was required for Al-resistant plants (148 μM Al) than for Al-sensitive (37 μM Al), in order to establish the same closed RCs. Yet, the decline in photosynthetic efficiency in the cultivar Dio was not only due to closure of PSII RCs but also to a decrease in the quantum yield of the open RCs. We suggest that Al(3+) toxicity may be mediated by nutrient deficiency and oxidative stress, and that Al-resistance of the wheat cultivar Yecora E, may be due at least partially, from the decreased Al accumulation that resulted to decreased reactive oxygen species (ROS) formation. However, under equal internal Al accumulation (exposure Al concentration: Dio 74 μM, Yecora E 148 μM) that resulted to the same oxidative stress, the reduced PSII excitation pressure and the better PSII functioning of the Al-resistant cultivar was probably due to the larger concentrations of Ca(2+) and Mg(2+) in the leaves. We propose that the different sensitivities of wheat cultivars to Al(3+) toxicity can be correlated to differences in the redox state of QA. Thus, chlorophyll fluorescence measurements can be a promising tool for rapid screening of Al resistance in wheat cultivars.

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Section: Introductionmentioning

confidence: 99%

Aluminum resistance in wheat involves maintenance of leaf Ca2+ and Mg2+ content, decreased lipid peroxidation and Al accumulation, and low photosystem II excitation pressure

Moustaka

Ouzounidou²,

Bayçu

et al. 2016

Biometals

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“…Moderate good growth of root in the acid soil could partly be due to the high organic C content of the soil used (8%) because soil organic matter decreases the amount of toxic Al through the formation of stable complexes between Al and humic or fulvic acids. Bona et al (1993) have recently suggested that the soil-based technique for barley screening could be applied to soils with an amount of extractable Al below 20 ppm. They also postulated that the culture solution technique could be applied to acid soils with a high organic matter content.…”

Section: Methodsmentioning

confidence: 99%

Evaluation of aluminum tolerance of three barley cultivars by two short-term screening methods and field experiments

Gallardo

Borie

Alvear

et al. 1999

Soil Science and Plant Nutrition

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“…In a ranking of acid-soil tolerance of cereal species, Panicum miliaceum was much less tolerant than rye (Secale cereale L.) and oats (Avena sativa), but slightly more tolerant than bread wheat (Triticum aestivum), barley (Hordeum vulgare) and durum wheat (Triticum durum Desf.) (Bona et al 1993b). These results differ from a review by Bavec and Bavec (2006), which stated that proso millet does not tolerate acid soil and that it prefers sandy-loam soil.…”

Section: Irelandmentioning

confidence: 99%

The Biology of Canadian Weeds: 155.Panicum miliaceumL.

Cavers

Kane

2016

Can. J. Plant Sci.

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this article has been changed to the CC BY 4.0 license. The PDF and HTML versions of the article have been modified accordingly.Abstract: Proso millet, Panicum miliaceum L. (Poaceae), has been a crop in Asia and Europe for 10 000 years and for over 300 years in Canada, where it is grown for grain, rescue crops, birdseed, forage, and recently for swath grazing. Crop-like biotypes have escaped from cultivation throughout Canada, but these infestations were generally temporary. Probably the first persistent, weedy biotype in Canada (Quebec) has large, dormant, dark red seeds. Its eradication has been attempted for many years. In the 1970s, a worse problem, a black-seeded biotype with many weedy attributes, including shattering as seeds ripen and strongly dormant seeds distasteful to many birds, spread across southern Ontario and became labelled as noxious. Concurrently, it was described as the worst weed in the US Corn Belt. In the 1980s, Canadian studies revealed infestations of other weedy biotypes, differing in seed colour and other attributes. Panicum miliaceum is an extremely variable species world-wide. Since the late 1990s, weedy proso millet has declined dramatically after the adoption of newer herbicides, particularly glyphosate. This development may lead to increases in cultivated proso millet, especially where climate change favours short-season crops grown under drier conditions. Key words: weed biology, proso millet, Panicum miliaceum L., weed/crop, intraspecific variation, global distribution and history.Résumé : On cultive le millet, Panicum miliaceum L. (poacées), depuis 10 000 ans en Asie et en Europe et depuis plus de trois siècles au Canada pour ses graines, comme provende de secours, pour nourrir les oiseaux, pour son fourrage et, plus récemment, pour la paissance en andain. Des biotypes domestiqués sont redevenus sauvages un peu partout au Canada, mais les infestations restent le plus souvent temporaires. Le premier biotype envahissant persistant du Canada a probablement été observé au Québec. Il se caractérise par de grosses semences rouges dormantes. On s'est efforcé de l'éradiquer pendant de nombreuses années. Dans les années 1970, un biotype à graines noires, possédant de nombreuses caractéristiques d'une mauvaise herbe (notamment l'égrenage prématuré quand les semences parviennent à maturité et des graines à dormance prolongée que peu d'oiseaux aiment), a soulevé un problème plus épineux en se répandant dans le sud de l'Ontario. Ce biotype a été qualifié de nuisible avant de devenir la pire adventice dans la ceinture du maïs des États-Unis. Dans les années 1980, des études canadiennes ont révélé l'existence de peuplements d'autres biotypes envahissants, aux semences de couleur différente et présentant d'autres caractères. Panicum miliaceum est une espèce extrêmement variable dans le monde. Depuis la fin des années 1990, les variétés envahissantes ont diminué de façon draconienne avec l'apparition de nouveaux herbicides, particulièrement le glyphosate. Ce développement pourrait déboucher su...

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Screening wheat and other small grains for acid soil tolerance

Cited by 39 publications

References 14 publications

Aluminum resistance in wheat involves maintenance of leaf Ca2+ and Mg2+ content, decreased lipid peroxidation and Al accumulation, and low photosystem II excitation pressure

Aluminum resistance in wheat involves maintenance of leaf Ca2+ and Mg2+ content, decreased lipid peroxidation and Al accumulation, and low photosystem II excitation pressure

Evaluation of aluminum tolerance of three barley cultivars by two short-term screening methods and field experiments

The Biology of Canadian Weeds: 155.Panicum miliaceumL.

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