Tolerance to aluminum toxicity by tropical leguminous plants used as cover crops

Meda, Anderson Rotter; Furlani, Pedro Roberto

doi:10.1590/s1516-89132005000200019

Cited by 31 publications

(28 citation statements)

References 47 publications

(45 reference statements)

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…Deleterious effects of subsoil soil-acidity on crop yield will thus be influenced by the extent to which a plant depends on the subsoil for supply of water and nutrients, especially when the topsoil dries out (Jozefaciuk and Szatanik-Kloc 2001;Stodart et al 2007;Tang et al 2001Tang et al , 2003a. Sorghum (Sorghum bicolor (L.) Moench) growing on acid soils yields less than its potential because of the poorly developed roots that cause reduced nutrient and water uptake (Meda and Furlani 2005;Bernel and Clark 1998). During the rainy season the soil moisture in the topsoil can sufficiently sustain shoot growth, while in the dry season the low rainfall will force the roots to explore deeper subsoil for water.…”

Section: Interaction Of Aluminium-drought Stresses On Crop Yieldmentioning

confidence: 99%

Interaction of aluminium and drought stress on root growth and crop yield on acid soils

2013

View full text Add to dashboard Cite

Background Aluminium (Al) toxicity and drought stress are two major constraints for crop production in the world, particularly in the tropics. The variation in rainfall distribution and longer dry spells in much of the tropics during the main growing period of crops are becoming increasingly important yield-limiting factors with the global climate change. As a result, crop genotypes that are tolerant of both drought and Al toxicity need to be developed. Scope The present review mainly focuses on the interaction of Al and drought on root development, crop growth and yield on acid soils. It summarizes evidence from our own studies and other published/related work, and provides novel insights into the breeding for the adaptation to these combined abiotic stresses. The primary symptom of Al phytotoxicity is the inhibition of root growth. The impeded root system will restrict the roots for exploring the acid subsoil to absorb water and nutrients which is particularly important under condition of low soil moisture in the surface soil under drought. Whereas drought primarily affects shoot growth, effects of phytotoxic Al on shoot growth are mostly secondary effects that are induced by Al affecting root growth and function, while under drought stress root growth may even be promoted. Much progress has recently been made in the understanding of the physiology and molecular biology of the interaction between Al toxicity and drought stress in common bean (Phaseolus vulgaris L.) in hydroponics and in an Al-toxic soil. Conclusions Crops growing on acid soils yield less than their potential because of the poorly developed root system that limits nutrient and water uptake. Breeding for drought resistance must be combined with Al resistance, to assure that drought resistance is expressed adequately in crops grown on soils with acid Al-toxic subsoils.

show abstract

Section: Interaction Of Aluminium-drought Stresses On Crop Yieldmentioning

confidence: 99%

Interaction of aluminium and drought stress on root growth and crop yield on acid soils

2013

View full text Add to dashboard Cite

show abstract

“…Most organisms are continuously exposed to Al-containing materials, but negative effects are only observed in acidic environments. Only in media with a pH below 4.5 a significant proportion of Al is present in the hexahydrate, trivalent cationic form, AlðH 2 OÞ 3þ 6 , which is considered the most relevant toxic Al species [1,2].…”

Section: Introductionmentioning

confidence: 99%

“…Within maize, an important food crop worldwide, sensitive and moderately tolerant variety can be distinguished [4][5][6]. Root growth is the primary target for Al toxicity.…”

Section: Introductionmentioning

confidence: 99%

Constitutive and aluminium-induced patterns of phenolic compounds in two maize varieties differing in aluminium tolerance

Tolrà

Barceló

Poschenrieder

2009

Journal of Inorganic Biochemistry

View full text Add to dashboard Cite

“…oxides and aluminosilicates are harmless to plants (Ma and Furukawa, 2003;Wang and Kao, 2004). is often reported for many species (Gunsé et al, 2003;Doncheva et al, 2005;Meda and Furlani, 2005). Increased rigidity of the double helix of DNA caused by accumulated Al 3+ results in poor cell division in root tip meristem (Meriga et al, 2010).…”

Section: Introductionmentioning

confidence: 97%

How do Citrus Crops Cope with Aluminum Toxicity?

Arunakumara¹,

Walpola²,

Yoon³

2012

Korean Journal of Soil Science and Fertilizer

View full text Add to dashboard Cite

World Agriculture faces daunting challenges in feeding the growing population today. Reduction in arable land extent due to numerous reasons threatens achievement of food and nutritional security. Under this back ground, agricultural use of acidic soils, which account for approximately 40 % of the world arable lands is of utmost important. However, due to aluminum (Al) toxicity and low available phosphorous (P) content, crop production in acidic soils is restricted. Citrus, in this context, gains worldwide recognition as a crop adapted to harsh environments. The present paper reviewed Al toxicity and possible toxicity alleviation tactics in citrus. As reported for many other crops, inhibition of root elongation, photosynthesis and growth is experienced in citrus also due to Al toxicity. Focusing at toxicity alleviation, interaction between boron (B) and Al as well as phosphorus and Al has been discussed intensively. Al toxicity in citrus could be alleviated by P through increasing immobilization of Al in roots and P level in shoots rather than through increasing organic acid secretion, which has been widely reported in other crops. Boron-induced changes in Al speciation and/or sub-cellular compartmentation has also been suggested in amelioration of root inhibition in citrus. Despite the species-dependent manner of response to Al toxicity, many commercially important citrus species can be grown successfully in acidic soils, provided toxicity alleviation Agro-biological tactics such as addition of phosphorous fertilizers are used properly.

show abstract

Tolerance to aluminum toxicity by tropical leguminous plants used as cover crops

Abstract: (IAC 13 and IAC 9).

Cited by 31 publications

References 47 publications

Interaction of aluminium and drought stress on root growth and crop yield on acid soils

Interaction of aluminium and drought stress on root growth and crop yield on acid soils

Constitutive and aluminium-induced patterns of phenolic compounds in two maize varieties differing in aluminium tolerance

How do Citrus Crops Cope with Aluminum Toxicity?

Contact Info

Product

Resources

About