Mobilization of cadmium and other metals from two soils by root exudates of Zea mays L., Nicotiana tabacum L. and Nicotiana rustica L.

1991 ◽  
Vol 132 (2) ◽  
pp. 187-196 ◽  
Author(s):  
M. Mench ◽  
E. Martin
Keyword(s):  
Zea Mays ◽  
Nicotiana Tabacum ◽  
Root Exudates ◽  
Zea Mays L ◽  
Nicotiana Rustica ◽  
Nicotiana Tabacum L

scholarly journals Biopesticidal Properties of Aqueous Crude Extracts of Tobacco (Nicotiana Tabacum L.) Against Fall Armyworm (Spodoptera Frugiperda J.E Smith) on Maize Foliage (Zea Mays L.) Diets

2020 ◽  
Vol 2 (1) ◽  
pp. p47
Author(s):  
Nyasha Sakadzo ◽  
Kasirai Makaza ◽  
Liberty Chikata
Keyword(s):  
Zea Mays ◽  
Nicotiana Tabacum ◽  
Spodoptera Frugiperda ◽  
Zea Mays L ◽  
Fall Armyworm ◽  
Positive Control ◽  
Negative Control ◽  
Distilled Water ◽  
Leaf Extracts ◽  
Nicotiana Tabacum L

Pesticidal plants offer valuable and sustainable options for managing Lepidopteran pests with considerable health, environmental and economic benefits in smallholder agro-ecosystem. This study Biopesticidal properties of aqueous crude extracts of tobacco (Nicotiana tabacum L.) against fall armyworm (Spodoptera frugiperda J.E Smith) on maize foliage (Zea mays L.) diets. Bio-efficacy of aqueous crude N. tabacum leaf extracts was evaluated under average room temperature at Great Zimbabwe University, Biology laboratory. The treatments were tobacco leaf extracts at four dosage levels (25 %, 33.33%, 41.67 % and 50% W/V ) and a negative control of untreated maize leaf foliage (distilled water) was used. A positive control of Carbaryl 85% WP was also used at label rates. The experiment was arranged in a Complete Randomized Design (CRD) replicated three times. Five larvae were placed into each of the experimental jars with maize foliage diets drenched into 10ml of distilled water in each treatment extract to keep the maize leaf foliage moist. Mortality for each treatment was recorded at 2 hourly intervals for 20 hours. Results showed that tobacco crude aqueous leaf extracts had Antifeedent activities against FAW larvae. The highest dose of 50% had significantly higher mean FAW larval mortalities (p< 0.05) than lower dosage (25%) and the negative control after 20 hours. However, 50% concentration was not significantly different (p>0.05) from the positive control and that of 33.33% and 41.67% dosages. The bioassay indicated that the 33.33% extract was superior in toxicity to 25% dose and the negative control but similar to higher extract doses though inferior to positive control. However, the mean mortality of 50% extract was not significantly different (p<0.05) from that of the positive control. This study recommends that 50% tobacco aqueous crude leaf extract dose to be used when controlling FAW in maize in the smallholder sector.

scholarly journals Effect of growth conditions on reducing properties of maize (Zea mays L.) root exudates

2014 ◽  
Vol 9 (22) ◽  
pp. 1681-1686 ◽  
Author(s):  
Liu Yuan ◽  
Xu Ren-kou
Keyword(s):  
Zea Mays ◽  
Root Exudates ◽  
Zea Mays L ◽  
Growth Conditions ◽  
Reducing Properties

Nicotiana rustica L. Nicotiana tabacum L. Solanaceae

2019 ◽  
pp. 1-7
Author(s):  
Rainer W. Bussmann ◽  
Ketevan Batsatsashvili ◽  
Zaal Kikvidze ◽  
Narel Y. Paniagua-Zambrana ◽  
Manana Khutsishvili ◽  
...  
Keyword(s):  
Nicotiana Tabacum ◽  
Nicotiana Rustica ◽  
Nicotiana Tabacum L

scholarly journals The role of root exudates in aluminium resistance and silicon‐induced amelioration of aluminium toxicity in three varieties of maize (Zea mays L.)

2001 ◽  
Vol 52 (359) ◽  
pp. 1339-1352 ◽  
Author(s):  
P.S. Kidd ◽  
M. Llugany ◽  
C. Poschenrieder ◽  
B. Gunsé ◽  
J. Barceló
Keyword(s):  
Zea Mays ◽  
Root Exudates ◽  
Zea Mays L ◽  
Aluminium Toxicity ◽  
Aluminium Resistance ◽  
Induced Amelioration

scholarly journals Rootstock-Scion Interaction Affects the Composition and Pathogen Inhibitory Activity of Tobacco (Nicotiana tabacum L.) Root Exudates

Plants ◽  
2020 ◽  
Vol 9 (12) ◽  
pp. 1652
Author(s):  
Cheng-Sheng Zhang ◽  
Yanfen Zheng ◽  
Lijuan Peng ◽  
Jianmin Cao
Keyword(s):  
Nicotiana Tabacum ◽  
Root Exudates ◽  
Root Exudate ◽  
Phytophthora Nicotianae ◽  
Susceptible Cultivar ◽  
Black Shank ◽  
Nicotiana Tabacum L ◽  
Disease Induction ◽  
Resistant Rootstock ◽  
Ethylhexyl Phthalate

The composition and allelopathy to Phytophthora nicotianae (the causal agent of tobacco black shank disease) of root exudates from a resistant tobacco (Nicotiana tabacum L.) cultivar Gexin 3, a susceptible cultivar Xiaohuangjin 1025 and their reciprocal grafts were investigated. Grafting with disease-resistant rootstock could improve resistance to black shank; this is closely related to the allelopathy of root exudates. The root exudates from the resistant cultivar inhibited the growth of P. nicotianae, while those from the susceptible cultivar promoted the growth; the grafting varieties had intermediate properties. The root exudate composition differed among cultivars. Gexin 3 was rich in esters and fatty acids, while Xiaohuangjin 1025 contained more hydrocarbons and phenolic acids. The composition of root exudates of grafted cultivars as well as their allelopathy to P. nicotianae were altered, and tended to be close to the composition of cultivar used as rootstock. Eugenol, 4-tert-butylphenol, mono (2-ethylhexyl) phthalate, 4-hydroxybenzoic acid, 2,6-di-tert-butylphenol, dipropyl phthalate, and methyl myristate were identified as the main compounds contributing to inhibitory properties of root exudates. Sorbitol was suggested to play a role in disease induction. Overall, rootstock–scion interaction affected the composition of tobacco root exudates, which may be attributed to the different disease resistance among grafted plants, rootstock and scion.

scholarly journals Maize (Zea mays L.) root exudates modify the surface chemistry of CuO nanoparticles: Altered aggregation, dissolution and toxicity

2019 ◽  
Vol 690 ◽  
pp. 502-510 ◽  
Author(s):  
Heping Shang ◽  
Huiyuan Guo ◽  
Chuanxin Ma ◽  
Chunyang Li ◽  
Benny Chefetz ◽  
...  
Keyword(s):  
Zea Mays ◽  
Surface Chemistry ◽  
Root Exudates ◽  
Zea Mays L ◽  
Cuo Nanoparticles

Nicotiana rustica L. Nicotiana tabacum L. Solanaceae

2021 ◽  
pp. 731-737
Author(s):  
Rainer W. Bussmann ◽  
Narel Y. Paniagua-Zambrana ◽  
Grace N. Njoroge
Keyword(s):  
Nicotiana Tabacum ◽  
Nicotiana Rustica ◽  
Nicotiana Tabacum L

scholarly journals The role of root exudates in aluminium resistance and silicon‐induced amelioration of aluminium toxicity in three varieties of maize ( Zea mays L.)

2001 ◽  
Vol 52 (359) ◽  
pp. 1339-1352 ◽  
Author(s):  
P.S. Kidd ◽  
M. Llugany ◽  
C. Poschenrieder ◽  
B. Gunsé ◽  
J. Barceló
Keyword(s):  
Zea Mays ◽  
Root Exudates ◽  
Zea Mays L ◽  
Aluminium Toxicity ◽  
Aluminium Resistance ◽  
Induced Amelioration
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