Physiological and transcriptomic response of soybean seedling roots to variable nitrate levels

2021 ◽  
Author(s):  
Yi Dai ◽  
Muhammad Adnan Tabassum ◽  
Lin Chen ◽  
Zhenzhi Pan ◽  
Li Song
Keyword(s):  
Soybean Seedling ◽  
Transcriptomic Response ◽  
Seedling Roots

Effects of bisphenol A on mineral nutrition in soybean seedling roots

2014 ◽  
Vol 34 (1) ◽  
pp. 133-140 ◽  
Author(s):  
Lijun Nie ◽  
Lihong Wang ◽  
Qingqing Wang ◽  
Shengman Wang ◽  
Qing Zhou ◽  
...  
Keyword(s):  
Bisphenol A ◽  
Mineral Nutrition ◽  
Soybean Seedling ◽  
Seedling Roots

Combined effects of bisphenol A and cadmium on growth and nitrate assimilation of soybean seedling roots

2014 ◽  
Vol 33 (9) ◽  
pp. 2013-2019 ◽  
Author(s):  
Zhaoguo Sun ◽  
Lihong Wang ◽  
Qingqing Wang ◽  
Qing Zhou ◽  
Xiaohua Huang
Keyword(s):  
Bisphenol A ◽  
Nitrate Assimilation ◽  
Combined Effects ◽  
Soybean Seedling ◽  
Seedling Roots

Effects of bisphenol A on key enzymes in cellular respiration of soybean seedling roots

2015 ◽  
Vol 34 (10) ◽  
pp. 2363-2369 ◽  
Author(s):  
Lijun Nie ◽  
Lihong Wang ◽  
Qingqing Wang ◽  
Shengman Wang ◽  
Qing Zhou ◽  
...  
Keyword(s):  
Bisphenol A ◽  
Cellular Respiration ◽  
Soybean Seedling ◽  
Key Enzymes ◽  
Seedling Roots

Effects of bisphenol A on antioxidant system in soybean seedling roots

2015 ◽  
Vol 34 (5) ◽  
pp. 1127-1133 ◽  
Author(s):  
Qingqing Wang ◽  
Lihong Wang ◽  
Ruobing Han ◽  
Linying Yang ◽  
Qing Zhou ◽  
...  
Keyword(s):  
Bisphenol A ◽  
Antioxidant System ◽  
Soybean Seedling ◽  
Seedling Roots

Detection of Neighboring Weeds Alters Soybean Seedling Roots and Nodulation

Weed Science ◽  
2015 ◽  
Vol 63 (4) ◽  
pp. 888-900 ◽  
Author(s):  
Jessica Gal ◽  
Maha Afifi ◽  
Elizabeth Lee ◽  
Lewis Lukens ◽  
Clarence J. Swanton
Keyword(s):  
Red Light ◽  
Growth Patterns ◽  
Soybean Plant ◽  
Plant Interactions ◽  
Flavonoid Content ◽  
Soybean Seedling ◽  
Antioxidant Genes ◽  
Biotic Stresses ◽  
Seedling Roots ◽  
Mda Content

Crop and weed competition studies rarely determine how plant-to-plant interactions alter the structure and physiology of crop roots. Soybean has the ability to detect neighboring weeds and to alter growth patterns including the allocation of resources to root growth. In this study, we hypothesized that low red : far red light ratio (R : FR) reflected from aboveground vegetative tissue of neighboring weeds would alter soybean root morphology and reduce root biomass and nodule number. All experiments were conducted under controlled conditions in which resources of light, water, and nutrients were nonlimiting. Low R : FR reflected from aboveground neighboring weeds reduced soybean seedling root length, surface area, and volume, including the number of nodules per plant. An accumulation of H2O2, an increase in malondialdehyde (MDA) content, a reduction in flavonoid content, and a decrease in 1,1-diphenyl-2-picrylhydrazyl (DPPH)–radicle scavenging activity were observed. The reduction in flavonoid content was accompanied by a decrease in the transcription ofGmIFS andGmN93 and an increase in transcript levels of several antioxidant genes. These molecular and physiological changes may have a physiological cost to the soybean plant, which may limit the plant's ability to respond to subsequent abiotic and biotic stresses that will occur under field conditions.

scholarly journals Oomycete Species Associated with Soybean Seedlings in North America—Part I: Identification and Pathogenicity Characterization

2017 ◽  
Vol 107 (3) ◽  
pp. 280-292 ◽  
Author(s):  
J. Alejandro Rojas ◽  
Janette L. Jacobs ◽  
Stephanie Napieralski ◽  
Behirda Karaj ◽  
Carl A. Bradley ◽  
...  
Keyword(s):  
United States ◽  
North America ◽  
The United States ◽  
Limited Information ◽  
Soybean Seedling ◽  
Internal Transcribed Spacer Region ◽  
Soybean Seedlings ◽  
Phytophthora Spp ◽  
Seedling Roots ◽  
Production Areas

Oomycete pathogens are commonly associated with soybean root rot and have been estimated to reduce soybean yields in the United States by 1.5 million tons on an annual basis. Limited information exists regarding the frequency and diversity of oomycete species across the major soybean-producing regions in North America. A survey was conducted across 11 major soybean-producing states in the United States and the province of Ontario, Canada. In 2011, 2,378 oomycete cultures were isolated from soybean seedling roots on a semiselective medium (CMA-PARPB) and were identified by sequencing of the internal transcribed spacer region of rDNA. Sequence results distinguished a total of 51 Pythium spp., three Phytophthora spp., three Phytopythium spp., and one Aphanomyces sp. in 2011, with Pythium sylvaticum (16%) and P. oopapillum (13%) being the most prevalent. In 2012, the survey was repeated, but, due to drought conditions across the sampling area, fewer total isolates (n = 1,038) were collected. Additionally, in 2012, a second semiselective medium (V8-RPBH) was included, which increased the Phytophthora spp. isolated from 0.7 to 7% of the total isolates. In 2012, 54 Pythium spp., seven Phytophthora spp., six Phytopythium spp., and one Pythiogeton sp. were recovered, with P. sylvaticum (14%) and P. heterothallicum (12%) being recovered most frequently. Pathogenicity and virulence were evaluated with representative isolates of each of the 84 species on soybean cv. Sloan. A seed-rot assay identified 13 and 11 pathogenic species, respectively, at 13 and 20°C. A seedling-root assay conducted at 20°C identified 43 species as pathogenic, having a significantly detrimental effect on the seedling roots as compared with the noninoculated control. A total of 15 species were pathogenic in both the seed and seedling assays. This study provides a comprehensive characterization of oomycete species present in soybean seedling roots in the major production areas in the United States and Ontario, Canada and provides a basis for disease management and breeding programs.

Uniconazole-induced thermotolerance in soybean seedling root tissue

1990 ◽  
Vol 79 (1) ◽  
pp. 78-84 ◽  
Author(s):  
Abha Upadhyaya ◽  
Tim D. Davis ◽  
M. H. Larsen ◽  
R. H. Walser ◽  
N. Sankhla
Keyword(s):  
Root Tissue ◽  
Soybean Seedling ◽  
Seedling Root ◽  
Induced Thermotolerance
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