Variations in the chemical composition of cassava (Manihot esculenta Crantz) leaves and roots as affected by genotypic and environmental variation

Anna Elizabeth Burns, Roslyn M Gleadow, Anabela Zacarias, Constantino Estevao Cuambe, Rebecca Elizabeth Miller, Timothy Cavagnaro

Research output: Contribution to journalArticleResearchpeer-review

39 Citations (Scopus)

Abstract

The purpose of this study was to assess the quality of cassava cultivars, in terms of cyanogenic potential and composition of macro- and micronutrients, sampled from different locations in rural Mozambique. Total cyanide concentrations in fresh cassava tissues were measured using portable cyanide testing kits, and elemental nutrients were later analyzed from dried plant tissue. Variation in cyanogenic potential and nutrient composition occurred both among cultivars and across locations. The majority of cultivars contained >100 ppm total cyanide, fresh weight, and are therefore considered to be dangerously poisonous unless adequately processed before consumption. Leaf cyanogenic and nutrient content varied with plant water status, estimated using carbon isotope discrimination (delta C-13). The colonization of roots of all cultivars by arbuscular mycorrhizal fungi was also quantified and found to be high, indicating that mycorrhizas could play a key role in plant nutrient acquisition in these low-input farming systems.
Original languageEnglish
Pages (from-to)4946 - 4956
Number of pages11
JournalJournal of Agricultural and Food Chemistry
Volume60
Issue number19
DOIs
Publication statusPublished - 2012

Cite this

Burns, Anna Elizabeth ; Gleadow, Roslyn M ; Zacarias, Anabela ; Cuambe, Constantino Estevao ; Miller, Rebecca Elizabeth ; Cavagnaro, Timothy. / Variations in the chemical composition of cassava (Manihot esculenta Crantz) leaves and roots as affected by genotypic and environmental variation. In: Journal of Agricultural and Food Chemistry. 2012 ; Vol. 60, No. 19. pp. 4946 - 4956.
@article{f90706c86f484193bf25e8620320a3f4,
title = "Variations in the chemical composition of cassava (Manihot esculenta Crantz) leaves and roots as affected by genotypic and environmental variation",
abstract = "The purpose of this study was to assess the quality of cassava cultivars, in terms of cyanogenic potential and composition of macro- and micronutrients, sampled from different locations in rural Mozambique. Total cyanide concentrations in fresh cassava tissues were measured using portable cyanide testing kits, and elemental nutrients were later analyzed from dried plant tissue. Variation in cyanogenic potential and nutrient composition occurred both among cultivars and across locations. The majority of cultivars contained >100 ppm total cyanide, fresh weight, and are therefore considered to be dangerously poisonous unless adequately processed before consumption. Leaf cyanogenic and nutrient content varied with plant water status, estimated using carbon isotope discrimination (delta C-13). The colonization of roots of all cultivars by arbuscular mycorrhizal fungi was also quantified and found to be high, indicating that mycorrhizas could play a key role in plant nutrient acquisition in these low-input farming systems.",
author = "Burns, {Anna Elizabeth} and Gleadow, {Roslyn M} and Anabela Zacarias and Cuambe, {Constantino Estevao} and Miller, {Rebecca Elizabeth} and Timothy Cavagnaro",
year = "2012",
doi = "10.1021/jf2047288",
language = "English",
volume = "60",
pages = "4946 -- 4956",
journal = "Journal of Agricultural and Food Chemistry",
issn = "0021-8561",
publisher = "American Chemical Society",
number = "19",

}

Variations in the chemical composition of cassava (Manihot esculenta Crantz) leaves and roots as affected by genotypic and environmental variation. / Burns, Anna Elizabeth; Gleadow, Roslyn M; Zacarias, Anabela; Cuambe, Constantino Estevao; Miller, Rebecca Elizabeth; Cavagnaro, Timothy.

In: Journal of Agricultural and Food Chemistry, Vol. 60, No. 19, 2012, p. 4946 - 4956.

Research output: Contribution to journalArticleResearchpeer-review

TY - JOUR

T1 - Variations in the chemical composition of cassava (Manihot esculenta Crantz) leaves and roots as affected by genotypic and environmental variation

AU - Burns, Anna Elizabeth

AU - Gleadow, Roslyn M

AU - Zacarias, Anabela

AU - Cuambe, Constantino Estevao

AU - Miller, Rebecca Elizabeth

AU - Cavagnaro, Timothy

PY - 2012

Y1 - 2012

N2 - The purpose of this study was to assess the quality of cassava cultivars, in terms of cyanogenic potential and composition of macro- and micronutrients, sampled from different locations in rural Mozambique. Total cyanide concentrations in fresh cassava tissues were measured using portable cyanide testing kits, and elemental nutrients were later analyzed from dried plant tissue. Variation in cyanogenic potential and nutrient composition occurred both among cultivars and across locations. The majority of cultivars contained >100 ppm total cyanide, fresh weight, and are therefore considered to be dangerously poisonous unless adequately processed before consumption. Leaf cyanogenic and nutrient content varied with plant water status, estimated using carbon isotope discrimination (delta C-13). The colonization of roots of all cultivars by arbuscular mycorrhizal fungi was also quantified and found to be high, indicating that mycorrhizas could play a key role in plant nutrient acquisition in these low-input farming systems.

AB - The purpose of this study was to assess the quality of cassava cultivars, in terms of cyanogenic potential and composition of macro- and micronutrients, sampled from different locations in rural Mozambique. Total cyanide concentrations in fresh cassava tissues were measured using portable cyanide testing kits, and elemental nutrients were later analyzed from dried plant tissue. Variation in cyanogenic potential and nutrient composition occurred both among cultivars and across locations. The majority of cultivars contained >100 ppm total cyanide, fresh weight, and are therefore considered to be dangerously poisonous unless adequately processed before consumption. Leaf cyanogenic and nutrient content varied with plant water status, estimated using carbon isotope discrimination (delta C-13). The colonization of roots of all cultivars by arbuscular mycorrhizal fungi was also quantified and found to be high, indicating that mycorrhizas could play a key role in plant nutrient acquisition in these low-input farming systems.

UR - http://pubs.acs.org/doi/pdfplus/10.1021/jf2047288

U2 - 10.1021/jf2047288

DO - 10.1021/jf2047288

M3 - Article

VL - 60

SP - 4946

EP - 4956

JO - Journal of Agricultural and Food Chemistry

JF - Journal of Agricultural and Food Chemistry

SN - 0021-8561

IS - 19

ER -