کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
6375603 1624834 2015 5 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Essential oil content and chemical composition of Cymbopogon citratus inoculated with arbuscular mycorrhizal fungi under different levels of lead
موضوعات مرتبط
علوم زیستی و بیوفناوری علوم کشاورزی و بیولوژیک علوم زراعت و اصلاح نباتات
پیش نمایش صفحه اول مقاله
Essential oil content and chemical composition of Cymbopogon citratus inoculated with arbuscular mycorrhizal fungi under different levels of lead
چکیده انگلیسی


- Essential oil (EO) content increased in lemon grass plants inoculated with AMF Rhizophagus clarus under high Pb additions to the soil.
- Without AMF inoculation and low Pb levels, the major component of the EO was citral.
- Under AMF inoculation, the EO of lemon grass was composed mainly by geranial for all Pb addition in the soil.

Lemon grass, Cymbopogon citratus Stapf, is an important aromatic plant used by industries that produce fragrances and aromas. This topic has been investigated very little in terms of arbuscular mycorrhizal fungi (AMF) associations and the effects of heavy metals, such as lead (Pb), in its metabolism. This study aimed to evaluate the essential oil (EO) content and the chemical composition obtained from lemon grass cultivated with or without AMF Rhizophagus clarus inoculums under five levels of Pb in the soil. The experiment was conducted in a greenhouse for six months and consisted of a completely randomized design. A 5 × 2 factorial was used for five levels of Pb (0, 50, 100, 500, and 1000 mg Pb kg−1 soil) and two levels of AMF inoculation (with or without R. clarus) and five replicates, totaling 50 experimental units. The EO content was determined and the chemical composition analyzed by GC and GC/MS. The secondary metabolites were affected by the presence of Pb in the soil as well as by the AMF association, which altered the content and chemical composition of EO. The levels of 500 and 1000 mg Pb kg−1 soil together with AMF association increased EO content up to 0.69%. In total, 21 components of EO were identified, and along the increasing levels of Pb, the plant metabolism changed and altered the major components of EO. Without AMF inoculation, the major constituent of EO was citral, with concentrations ranging from 36.66 to 45.08% for the lowest levels of Pb. With AMF inoculation, EO was composed mainly of geranial, with concentrations ranging from 39.27 to 58.97% for all Pb levels. Without AMF inoculation, the concentrations of geranial ranged from 43.66 to 62.95% for the highest levels of Pb. High levels of citral and geranial are of great interest to the aroma and fragrance industry, and citral is a basic substance for the synthesis of vitamin A and ionone.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Industrial Crops and Products - Volume 76, 15 December 2015, Pages 734-738
نویسندگان
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