Skip to main content
U.S. Department of Energy
Office of Scientific and Technical Information

Genotypic variation in aluminum resistance, cellular aluminum fractions, callose and pectin formation and organic acid accumulation in roots of Populus hybrids

Journal Article · · Environmental and Experimental Botany
Soil acidity and aluminum (Al) toxicity are major factors limiting crop yield and forest productivity worldwide. Hybrid poplar (Populus spp.) was used as a model to assess genotypic variation in Al resistance and physiological stress responses to Al in a woody tree species. Eight hybrid crosses of P. trichocarpa, P. deltoides and P. nigra were exposed to Al in solution culture. Resistance to Al varied by genotype and hybrid cross, with P. trichocarpa x P. deltoides crosses being most resistant, P. trichocarpa x P. nigra being intermediate and P. deltoides x P. nigra being most sensitive to Al. Total root Al accumulation was not a good indicator of Al resistance/sensitivity. However, the partitioning of Al into apoplastic and symplastic fractions indicated that differences in sensitivity among genotypes were associated with Al uptake into the symplasm. Aluminum treatment increased callose and pectin concentrations of root tips in all genotypes, but more prominently in Al sensitive genotypes/hybrids. In Al sensitive genotypes, higher levels of symplastic Al accumulation correlated with elevated concentrations of citrate, malate, succinate or formate in root tips, whereas organic acid accumulation was not as pronounced in Al resistant genotypes. These findings suggest that exclusion of Al from the symplast is associated with Al resistance. Further screening of Al tolerant poplar genotypes could yield successful candidates to be utilized for sustainable reforestation/reclamation and carbon sequestration projects where soil acidity may limit tree growth.
Research Organization:
West Virginia Univ., Morgantown, WV (United States)
Sponsoring Organization:
USDOE Office of Science (SC)
DOE Contract Number:
FG02-06ER64148
OSTI ID:
1052827
Report Number(s):
DOE/ER64148-2
Journal Information:
Environmental and Experimental Botany, Journal Name: Environmental and Experimental Botany Journal Issue: 2 Vol. 72; ISSN 0098-8472
Publisher:
Elsevier
Country of Publication:
United States
Language:
English

References (55)

Mechanisms of adaptation of plants to acid soils journal July 1991
Aluminium Tolerance of Maize Cultivars as Assessed by Callose Production and Root Elongation journal January 1994
Vitality of tree fine roots: reevaluation of the tetrazolium test journal March 2003
New method for quantitative determination of uronic acids journal August 1973
Fast root growth responses, root exudates, and internal detoxification as clues to the mechanisms of aluminium toxicity and resistance: a review journal July 2002
Aluminum fractions in root tips of slash pine and loblolly pine families differing in Al resistance journal February 2005
Role of exudation of organic acids and phosphate in aluminum tolerance of four tropical woody species journal October 2003
Cytological and enzymatic responses to aluminium stress in root tips of Norway spruce seedlings journal July 2004
Aluminium-induced changes in the profiles of both organic acids and phenolic substances underlie Al tolerance in Rumex acetosa L. journal November 2005
Intracellular distribution and binding state of aluminum in root apices of two common bean (Phaseolus vulgaris) genotypes in relation to Al toxicity journal January 2009
Quantitative determination of callose in tree roots journal December 2006
Cell‐wall pectin and its degree of methylation in the maize root‐apex: significance for genotypic differences in aluminium resistance journal July 2005
Genotypic differences in Al resistance and the role of cell-wall pectin in Al exclusion from the root apex in Fagopyrum tataricum journal December 2010
Response of tree seedlings to aluminum journal September 1989
Mechanisms of Aluminum Tolerance in Wheat: An Investigation of Genotypic Differences in Rhizosphere pH, K + , and H + Transport, and Root-Cell Membrane Potentials journal November 1989
Assessing the phytotoxicity of mononuclear hydroxy‐aluminum journal July 1989
Mycorrhizae confer aluminum resistance to tulip-poplar seedlings journal January 2001
Aluminium tolerance in plants and the complexing role of organic acids journal June 2001
Role of root cation‐exchange capacity in differential aluminum tolerance oflotusspecies journal June 1990
The platform for European root science, COST action E38: An introduction and overview journal November 2007
Induction of callose in roots of Norway spruce seedlings after short-term exposure to aluminum journal November 2004
Global extent, development and economic impact of acid soils journal April 1995
Aluminum Effects on Nitrogen Uptake and Nitrogen Assimilating Enzymes in Maize Genotypes with Contrasting Tolerance to Aluminum Toxicity journal March 2003
Alteration of cell-wall porosity is involved in osmotic stress-induced enhancement of aluminium resistance in common bean (Phaseolus vulgaris L.) journal May 2010
Cell wall pectin content modulates aluminium sensitivity of Zea mays (L.) cells grown in suspension culture journal July 2000
Effects of aluminium on root growth and apical root cells in rice (Oryza sativa L.) cultivars. Reliability of screening tests to detect Al resistance at the seedling stage journal August 2009
Al Binding in the Epidermis Cell Wall Inhibits Cell Elongation of Okra Hypocotyl journal January 1999
Tree fine root Ca/Al molar ratio – Indicator of Al and acidity stress journal November 2007
Rhizosphere carbon deposition, oxidative stress and nutritional changes in two poplar species exposed to aluminum journal January 2009
Organic acid metabolism in plants: from adaptive physiology to transgenic varieties for cultivation in extreme soils journal December 2000
Response of Picea abies (L.) Karst. Provenances to sulphur dioxide and aluminum: A pilot study journal April 1992
Exudation of organic acid anions from poplar roots after exposure to Al, Cu and Zn journal February 2007
Responses of Quaking Aspen Seedlings to Solution Calcium and Aluminum journal March 2003
A Continuous Fluorometric Assay for Pectin Methylesterase journal May 1996
Aluminum Toxicity and Tolerance in Plants journal February 1995
Callose in root apices of European chestnut seedlings: a physiological indicator of aluminum stress journal April 2006
Aluminium tolerance in trees of a tropical cloud forest journal July 1990
Responses of eucalypt species to aluminum: the possible involvement of low molecular weight organic acids in the Al tolerance mechanism journal November 2004
Citrate-release-mediated aluminum resistance is coupled to the inducible expression of mitochondrial citrate synthase gene in Paraserianthes falcataria journal May 2006
Role of organic acids in aluminum accumulation and plant growth in Melastoma malabathricum journal August 2002
Accumulation of aluminium in the cell wall pectin in cultured tobacco (Nicotiana tabacum L.) cells treated with a combination of aluminium and iron journal August 1999
Apoplastic Binding of Aluminum Is Involved in Silicon-Induced Amelioration of Aluminum Toxicity in Maize journal November 2004
The role of the root apoplast in aluminium-induced inhibition of root elongation and in aluminium resistance of plants: a review journal March 2010
Accumulation Sites of A1 in Snapbean and Cotton Roots1 journal May 1978
The Physiology, Genetics and Molecular Biology of Plant Aluminum Resistance and Toxicity journal July 2005
Pectin methylesterases from poplar cambium and inner bark: localization, properties and seasonal changes journal April 1997
Variations in organic acid exudation and aluminum resistance among arbuscular mycorrhizal species colonizing Liriodendron tulipifera journal August 2007
Aluminum tolerance and aluminum-induced deposition of callose and lignin in the root tips of Melaleuca and Eucalyptus species journal August 2005
Characterization of 1,3-β-D-Glucan (Callose) Synthesis in Roots of Triticum aestivum in Response to Aluminum Toxicity journal August 1994
Aluminum and Iron Equilibria in Soil Solutions and Surface Waters of Acid Mine Watersheds journal October 1988
Kinetics of Aluminum Uptake by Excised Roots of Aluminum-Tolerant and Aluminum-Sensitive Cultivars of Triticum aestivum L. journal November 1989
Aluminum Effects on Calcium Fluxes at the Root Apex of Aluminum-Tolerant and Aluminum-Sensitive Wheat Cultivars journal January 1992
Development and optimization of organic acid analysis in tobacco with ion chromatography and suppressed conductivity detection journal March 2002
Tree roots in a changing world journal April 2007
Operationally Defined Apoplastic and Symplastic Aluminum Fractions in Root Tips of Aluminum-Intoxicated Wheat journal September 1992

Similar Records

Exudation by Poplar Ectomycorrhizas: Qualitative and Quantitative Assessment of C Sequestration (Final Report)
Technical Report · Sun Nov 18 23:00:00 EST 2012 · OSTI ID:1054600

Bark morphological and chemical features are differentially correlated with disease resistance and yield in hybrid poplar taxa
Journal Article · Thu Jul 06 20:00:00 EDT 2023 · Global Change Biology. Bioenergy · OSTI ID:2000292

Rhizosphere carbon deposition, oxidative stress and nutritional changes in two poplar species exposed to aluminum
Journal Article · Sun Jan 18 23:00:00 EST 2009 · Tree Physiology · OSTI ID:1052826