First insights into the role of PQQ cofactor in the modulation of bacterial redox state and in the early interaction with peanut (Arachis hypogaea L.)

2020 ◽  
Vol 152 ◽  
pp. 103560
Author(s):  
Liliana Mercedes Ludueña ◽  
Eliana Bianucci ◽  
María Soledad Anzuay ◽  
Jorge Guillermo Angelini ◽  
Adriana Fabra ◽  
...  
Keyword(s):  
Arachis Hypogaea ◽  
Redox State ◽  
Arachis Hypogaea L ◽  
Early Interaction

scholarly journals The role of insect damage in the colonization of groundnut (Arachis hypogaea L.) pods by fungi

1994 ◽  
Vol 11 (4) ◽  
pp. 159-162 ◽  
Author(s):  
C. F. van Eeden ◽  
J. B.J van Flensburg ◽  
T. C. de K. van der Linde
Keyword(s):  
Arachis Hypogaea ◽  
Insect Damage ◽  
Arachis Hypogaea L

Role of Exogenous Nitric Oxide in Alleviating Iron Deficiency Stress of Peanut Seedlings (Arachis hypogaea L.)

2015 ◽  
Vol 35 (1) ◽  
pp. 31-43 ◽  
Author(s):  
Jing Kong ◽  
Yuanjie Dong ◽  
Yiling Song ◽  
Xiaoying Bai ◽  
Xianyi Tian ◽  
...  
Keyword(s):  
Nitric Oxide ◽  
Iron Deficiency ◽  
Arachis Hypogaea ◽  
Arachis Hypogaea L ◽  
Exogenous Nitric Oxide

Etiology of Peanut Pod Rot in Nicaragua: II. The Role of Pythium myriotylum as Defined by Applications of Gypsum and Fungicides

2010 ◽  
Vol 11 (1) ◽  
pp. 27 ◽  
Author(s):  
Joao Augusto ◽  
Timothy B. Brenneman ◽  
Alexander S. Csinos
Keyword(s):  
Arachis Hypogaea ◽  
Crop Yield ◽  
Sclerotium Rolfsii ◽  
Field Trials ◽  
Stem Rot ◽  
Unknown Etiology ◽  
Pythium Myriotylum ◽  
Arachis Hypogaea L

Peanut (Arachis hypogaea L.) is monocultured in western Nicaragua on loamysand soils, and a pod rot of unknown etiology can greatly reduce crop yield. Pythium myriotylum was frequently isolated from symptomatic pods in fields surveyed at Cosiguina, Leon, and Chinandega regions, although Rhizoctonia and Fusarium were also common. Applications of mefenoxam (0.57 kg a.i./ha), azoxystrobin (0.34 kg a.i./ha), and gypsum (670 kg/ha) at beginning pod and 28 to 35 days later were evaluated in field trials to determine their effects on pod rot and yield. Mefenoxam consistently decreased pod rot incidence and increased yield when disease was severe at Cosiguina. In Leon and Chinandega, azoxystrobin increased yield in fields with little pod rot, apparently by controlling stem rot (Sclerotium rolfsii), but did not decrease pod rot incidence. Application of gypsum had no effect on pod rot incidence or yield, but sometimes increased calcium levels in shells. Pod mycoflora isolations and response to mefenoxam suggest P. myriotylum is the primary cause of peanut pod rot in Nicaragua, especially in Cosiguina, where pod rot incidence was high. Accepted for publication 4 November 2009. Published 15 February 2010.

The role of mutations in intraspecific differentiation of groundnut (Arachis hypogaea L.)

Euphytica ◽  
1996 ◽  
Vol 90 (1) ◽  
pp. 105-113 ◽  
Author(s):  
M. V. C. Gowda ◽  
H. L. Nadaf ◽  
R. Sheshagiri
Keyword(s):  
Arachis Hypogaea ◽  
Intraspecific Differentiation ◽  
Arachis Hypogaea L

Direct somatic embryogenesis and regeneration of plants from seedling explants of peanut (Arachis hypogaea): promotive role of thidiazuron

1992 ◽  
Vol 70 (6) ◽  
pp. 1186-1192 ◽  
Author(s):  
R. Gill ◽  
Praveen K. Saxena
Keyword(s):  
Somatic Embryogenesis ◽  
Plant Regeneration ◽  
Arachis Hypogaea ◽  
Somatic Embryos ◽  
Direct Somatic Embryogenesis ◽  
Shoot Buds ◽  
Arachis Hypogaea L ◽  
Seedling Explants

An efficient procedure has been developed for inducing direct somatic embryogenesis, organogenesis, and regeneration of plants from tissue cultures of peanut (Arachis hypogaea L.). Thin transverse sections of the cotyledons and juvenile leaves were cultured on Murashige and Skoog medium supplemented with N6-benzylaminopurine (BAP) or a substituted phenylurea, thidiazuron (TDZ). Somatic embryos or shoot buds differentiated from cut surfaces of the cotyledons and midrib region of the leaves. The application of BAP induced differentiation of shoot buds whereas the treatment with TDZ resulted in the production of somatic embryos. Somatic embryos developed into plants after subculturing on a basal meduim. Agar-solidified medium was found to be superior to the liquid medium for the development of embryos and shoot buds. The procedure of TDZ-induced somatic embryogenesis and plant regeneration was successfully applied to three genotypes of peanut. A distinct feature of this study is the induction of the morphogenic competence in cultures of seedling expiants of peanut that so far have remained recalcitrant to somatic embryogenesis in vitro. Key words: peanut, Arachis hypogaea, shoot regeneration, somatic embryogenesis, thidiazuron, plant regeneration.

scholarly journals The antisense expression of AhPEPC1 increases seed oil production in peanuts (Arachis hypogaea L.)

2016 ◽  
Vol 67 (4) ◽  
pp. 164 ◽  
Author(s):  
L. Pan ◽  
J. Zhang ◽  
X. Chi ◽  
N. Chen ◽  
M. Chen ◽  
...  
Keyword(s):  
Salt Tolerance ◽  
Arachis Hypogaea ◽  
Lipid Accumulation ◽  
Wild Type ◽  
Plant Lipid ◽  
Antisense Expression ◽  
Fatty Acid Accumulation ◽  
Arachis Hypogaea L ◽  
Acid Accumulation

Although phosphoenolpyruvate carboxylases (PEPCs) are reported to be involved in fatty acid accumulation, nitrogen assimilation, and salt and drought stresses, knowledge regarding PEPC gene functions is still limited, particularly in peanuts (Arachis hypogaea L.). In this study, the antisense expression of the peanut PEPC isoform 1 (AhPEPC1) gene increased the lipid content by 5.7%–10.3%. This indicated that AhPEPC1 might be related to plant lipid accumulation. The transgenic plants underwent more root elongation than the wild-type under salinity stress. Additionally, the specific down regulation of the AhPEPC1 gene improved the salt tolerance in peanuts. This is the first report on the role of PEPC in lipid accumulation and salt tolerance in peanuts.

Role of Testa, Cotyledons and Embryonic Axis in Seed Dormancy of Groundnut (Arachis hypogaea L.)

1999 ◽  
Vol 182 (1) ◽  
pp. 37-41 ◽  
Author(s):  
A. Bandyopadhyay ◽  
P. C. Nautiyal ◽  
T. Radhakrishnan ◽  
H. K. Gor
Keyword(s):  
Arachis Hypogaea ◽  
Seed Dormancy ◽  
Embryonic Axis ◽  
Arachis Hypogaea L
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