Lethal amounts of ricinine in green peach aphids (Myzus persicae) (Suzler) fed on castor bean plants

Plant Science ◽  
1991 ◽  
Vol 73 (2) ◽  
pp. 253-256 ◽  
Author(s):  
Julius I. Olaifa ◽  
Fumio Matsumura ◽  
Jan A.D. Zeevaart ◽  
Christopher A. Mullin ◽  
Petros Charalambous
Keyword(s):  
Myzus Persicae ◽  
Castor Bean ◽  
Bean Plants ◽  
Green Peach Aphids

scholarly journals CELL DAMAGE, WATER STATUS AND GAS EXCHANGES IN CASTOR BEAN AS AFFECTED BY CATIONIC COMPOSITION OF WATER

2019 ◽  
Vol 32 (2) ◽  
pp. 482-492
Author(s):  
GEOVANI SOARES DE LIMA ◽  
HANS RAJ GHEYI ◽  
REGINALDO GOMES NOBRE ◽  
LAURIANE ALMEIDA DOS ANJOS SOARES ◽  
JOÃO BATISTA DOS SANTOS
Keyword(s):  
Salt Stress ◽  
Irrigation Water ◽  
Castor Bean ◽  
Water Saturation ◽  
Water Status ◽  
Water Saturation Deficit ◽  
Gas Exchanges ◽  
Saturation Deficit ◽  
Cationic Composition ◽  
Bean Plants

ABSTRACT Castor bean is an oilseed crop which is able to adapt to various edaphoclimatic conditions and has considerable contents of oil in its seeds, with potential for use in the castor oil industry. In this context, this study aimed to evaluate changes in membrane damage, water status and gas exchanges in castor bean plants (cv. ‘BRS Energia’) in response to irrigation water salinity and cationic composition. Randomized blocks were used to test six cationic compositions (S1 - Control; S2 - Na+; S3 - Ca2+; S4 - Na+ + Ca2+; S5 - K+ and S6 - Na+ + Ca2+ + Mg2+), in four replicates. Plants in the control treatment were subjected to irrigation using water of low electrical conductivity (S1 - ECw = 0.6 dS m-1), whereas those in the other treatments were irrigated using 4.5 dS m-1 water prepared with different cations. Higher leaf succulence associated with lower water saturation deficit is an indication of tolerance to salt stress in castor bean plants irrigated with K+-rich water. The presence of Na+ in irrigation water caused the highest water saturation deficit in castor bean leaf blades. The lowest damage in cell membranes was observed in plants irrigated with Ca2+-rich water. The damaging effect of salt stress on castor bean gas exchanges depends on the cationic composition of water and occurred in the following order: Na+>Na++Ca2+>Ca2+> Na++Ca2++Mg2+>K+.

scholarly journals Aluminum tolerance in castor bean lines1

2018 ◽  
Vol 48 (3) ◽  
pp. 299-305
Author(s):  
Lucas Barbosa de Freitas ◽  
Dirceu Maximino Fernandes ◽  
Suelen Cristina Mendonça Maia ◽  
Laerte Gustavo Pivetta ◽  
Maurício Dutra Zanotto
Keyword(s):  
Castor Bean ◽  
Block Design ◽  
Aluminum Tolerance ◽  
Acid Soils ◽  
Al Tolerance ◽  
Tropical Regions ◽  
Randomized Block Design ◽  
Bean Plants ◽  
Management Techniques ◽  
Adequate Management

ABSTRACT Castor bean plants are susceptible to aluminum (Al) in the soil, requiring adequate management techniques for their cultivation in acid soils containing high Al levels, as it occurs in tropical regions. This study aimed to assess the Al tolerance of castor bean lines. A randomized block design, in a 2 x 9 factorial scheme, with four replicates, was used. The treatments consisted of presence and absence of Al, as well as nine castor bean lines (CRZ H06, CRZ H11, CRZ H12, CRZ H15, CRZ H17, CRZ H18, CRZ H19, CRZ H22 and FCA). Based on a distribution into quartiles, the lines were divided into two groups. The Al-tolerant group contained the CRZ H06, H11 and H17 lines, while the group susceptible to Al was composed of CRZ H12, H15, H18, H19, H22 and FCA. The FCA and CRZ H17 lines showed the highest growth, when cultivated without Al.

scholarly journals PHYSIOLOGICAL AND SANITARY QUALITY AND OIL CONTENT OF CASTOR BEAN SEEDS UNDER DIFFERENT STORAGE CONDITIONS?

2019 ◽  
Vol 32 (1) ◽  
pp. 131-142
Author(s):  
Heloisa Oliveira dos Santos ◽  
Maria Laene Moreira de Carvalho ◽  
Camila Aparecida Lopes ◽  
Édila Vilela de Resende Von Pinho ◽  
Stefânia Vilas Boas Coelho
Keyword(s):  
Castor Bean ◽  
Oil Content ◽  
Seed Quality ◽  
Ricinus Communis ◽  
Storage Condition ◽  
Storage Conditions ◽  
Ideal Condition ◽  
Randomized Design ◽  
Cold Room ◽  
Bean Plants

ABSTRACT The objective of this work was to evaluate the effects of different storage conditions on the physiological and sanitary quality and oil content of castor bean (Ricinus communis) seeds. Seeds of castor bean plants of the Guarani, and IAC-80 cultivars were stored in two environments (cold room, and room conditions), using three package types (multifoliate Kraft paper bag, and polyethylene bag, and polyethylene bag with vacuum at 1 atm). In addition, another storage condition was evaluated: cryopreservation (-196 °C) in foil paper bags. Seed quality was evaluated before storage and at 4, 8, and 12 months after storage by testing their 7-day and 14-day germination, emergence, health, water content, and oil content. The experiment was conducted in a completely randomized design, with 7×4 factorial arrangement consisting of seven storage conditions and four evaluation times. Cryopreservation is the ideal condition for maintaining the seed physiological quality of the Ricinus communis cultivars used throughout storage. The oil content of the R. communis seeds decreases, and the incidence of Aspergillus spp. and Fusarium spp. fungi increases throughout storage, regardless of the storage conditions.

ACC deaminase from plant growth-promoting bacteria affects crown gall development

2007 ◽  
Vol 53 (12) ◽  
pp. 1291-1299 ◽  
Author(s):  
Youai Hao ◽  
Trevor C. Charles ◽  
Bernard R. Glick
Keyword(s):  
Plant Growth ◽  
Castor Bean ◽  
Crown Gall ◽  
Acc Deaminase ◽  
Plant Growth Promoting Bacteria ◽  
Bean Plants ◽  
Tumour Formation ◽  
Plant Growth Promoting ◽  
Growth Promoting ◽  
Agrobacterium Tumefaciens C58

In addition to the well-known roles of indoleacetic acid and cytokinin in crown gall formation, the plant hormone ethylene also plays an important role in this process. Many plant growth-promoting bacteria (PGPB) encode the enzyme 1-aminocyclopropane-1-carboxylate (ACC) deaminase, which can degrade ACC, the immediate precursor of ethylene in plants, to α-ketobutyrate and ammonia and thereby lower plant ethylene levels. To study the effect of ACC deaminase on crown gall development, an ACC deaminase gene from the PGPB Pseudomonas putida UW4 was introduced into Agrobacterium tumefaciens C58, so that the effect of ACC deaminase activity on tumour formation in tomato and castor bean plants could be assessed. Plants were also coinoculated with A. tumefaciens C58 and P. putida UW4 or P. putida UW4-acdS– (an ACC deaminase minus mutant strain). In both types of experiments, it was observed that the presence of ACC deaminase generally inhibited tumour development on both tomato and castor bean plants.

Accumulation of arsenic and nutrients by castor bean plants grown on an As-enriched nutrient solution

2009 ◽  
Vol 168 (1) ◽  
pp. 479-483 ◽  
Author(s):  
E.E.C. Melo ◽  
E.T.S. Costa ◽  
L.R.G. Guilherme ◽  
V. Faquin ◽  
C.W.A. Nascimento
Keyword(s):  
Nutrient Solution ◽  
Castor Bean ◽  
Bean Plants

scholarly journals TROCAS GASOSAS, PIGMENTOS CLOROPLASTÍDICOS E DANO CELULAR NA MAMONEIRA SOB DIFERENTES COMPOSIÇÕES CATIÔNICA DA ÁGUA

Irriga ◽  
2017 ◽  
Vol 22 (4) ◽  
pp. 757-774 ◽  
Author(s):  
Geovani Soares Lima ◽  
Hans Raj Gheyi ◽  
Reginaldo Gomes Nobre ◽  
Lauriane Almeida dos Soares ◽  
Pedro Dantas Fernandes ◽  
...  
Keyword(s):  
Electrical Conductivity ◽  
Cell Membrane ◽  
Castor Bean ◽  
Block Design ◽  
Membrane Damage ◽  
Bean Plant ◽  
Control Treatment ◽  
Agricultural Activity ◽  
Chloroplast Pigments ◽  
Bean Plants

TROCAS GASOSAS, PIGMENTOS CLOROPLASTÍDICOS E DANO CELULAR NA MAMONEIRA SOB DIFERENTES COMPOSIÇÕES CATIÔNICA DA ÁGUA  GEOVANI SOARES LIMA1; HANS RAJ GHEYI2; REGINALDO GOMES NOBRE3; LAURIANE ALMEIDA DOS ANJOS SOARES4; PEDRO DANTAS FERNANDES5 E GUILHERME DE FREITAS FURTADO6 1Unidade Acadêmica de Engenharia Agrícola, Universidade Federal de Campina Grande, UFCG, Rua Aprígio Veloso, 882 -Universitário, Campina Grande, PB, [email protected] Núcleo de Engenharia de Água e Solo, Universidade Federal do Recôncavo da Bahia, UFRB, Rua Rui Barbosa,710 -Centro, Cruz das Almas, BA. [email protected] Acadêmica de Ciências Agrárias, Universidade Federal de Campina Grande, UFCG, Rua Jario Vieira Feitosa, 1770, Bairro dos Pereiros, Pombal, PB, [email protected] Acadêmica de Engenharia Agrícola, Universidade Federal de Campina Grande, UFCG, Rua Aprígio Veloso, 882 -Universitário, Campina Grande, PB, [email protected] Acadêmica de Engenharia Agrícola, Universidade Federal de Campina Grande, UFCG, Rua Aprígio Veloso, 882 -Universitário, Campina Grande, PB, [email protected] Acadêmica de Engenharia Agrícola, Universidade Federal de Campina Grande, UFCG, Rua Aprígio Veloso, 882 -Universitário, Campina Grande, PB, [email protected]  1 RESUMO Devido ao aumento na demanda de água tanto pela atividade agrícola quanto pelo abastecimento urbano e industrial e, considerando a escassez hídrica tanto quantitativa como qualitativamente, especialmente no semiárido do Nordeste Brasileiro, o uso de água salina na agricultura surge como alternativa para expansão das áreas irrigadas. Neste contexto, se avaliaram no presente estudo, as trocas gasosas, os pigmentos cloroplastídicos e o dano na membrana celular das plantas de mamoneira cv. BRS Energia, em função da irrigação com águas salinas de diferente natureza catiônica. O experimento foi desenvolvido em lisímetros de drenagem em condições de casa de vegetação, usando Argissolo Acinzentado Eutrófico de textura franco-arenosa, no município de Campina Grande-PB. Foram estudadas seis combinações catiônica da água (Testemunha; Na+; Ca2+; Na++Ca2+; K+ e Na++Ca2++Mg2+), no delineamento em blocos casualizados com quatro repetições, sendo cada parcela composta por cinco plantas. No tratamento testemunha, as plantas foram irrigadas com água de condutividade elétrica de 0,6 dS m-1 enquanto se utilizou nos demais tratamentos CEa de 4,5 dS m-1, obtida a partir de diferentes cátions, todos em forma de cloreto. A variação na condutividade elétrica da água promove maior efeito deletério sobre as trocas gasosas, os pigmentos cloroplastídicos e o dano na membrana celular das plantas de mamoneira cv. BRS Energia, na fase de florescimento, em comparação com a natureza catiônica da água; o potássio foi o cátion que proporciona os maiores valores para a taxa de assimilação de CO2 e eficiência instantânea do uso da água; O maior percentual de dano na membrana celular na mamoneira foi obtido nas plantas irrigadas com água potássica. Palavras-chave: Ricinnus communis L., estresse salino, fisiologia.   LIMA, G. S. de.; GHEYI, H. R.; NOBRE, R. G.; SOARES, L. A. dos A.; FERNANDES, P. D.;FURTADO, G. de F.GAS EXCHANGES, CHLOROPLAST PIGMENTS AND CELL DAMAGE IN THE CASTOR BEAN PLANT UNDER DIFFERENT CATIONIC WATER COMPOSITIONS   2 ABSTRACT Due to the increase in water demand both for the agricultural activity and for urban as well as industrial supply and considering water scarcity both quantitatively and qualitatively, especially in semi-arid region of the Brazilian Northeast, the use of saline water in agriculture is an alternative for the expansion of irrigated areas. In this context, gaseous exchanges, chloroplast pigments and cell membrane damage in castor bean plants cv. BRS Energia, due to the irrigation with saline waters of a different cationic nature were evaluated. The experiment was carried out in drainage lysimeters under greenhouse conditions, using the Eutrophic Ultisol of sandy loam texture, in the city of Campina Grande, PB. Six cationic water combinations (Control, Na+, Ca2+, Na++ Ca2 +, K+ and Na++ Ca2++ Mg2+) were studied in the randomized block design with four replicates, each plot being composed of five plants. In the control treatment, the plants were irrigated with water of 0.6 dS m-1 electrical conductivity while in other treatments, ECw of 4.5 dS m-1, obtained from different cations, all in the form of chloride, were used. The variation in the electrical conductivity of the water promotes a greater deleterious effect on the gas exchange, chloroplast pigments and damage to the cell membrane of the castor bean plants cv. BRS Energia, in the flowering phase, compared to the cationic nature of water; potassium is the cation that provides the highest values for the CO2 assimilation rate and instantaneous efficiency of water use; the highest percentage of damage to the cell membrane of the castor bean plant is obtained in plants irrigated with water containing potassium. Keywords: Ricinnus communis L., salt stress, physiology.

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