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21.
White Emma L. Thomasson J. Alex Auvermann Brent Kitchen Newell R. Pierson Leland Sandy Porter Dana Baillie Craig Hamann Hendrik Hoogenboom Gerrit Janzen Todd Khosla Rajiv Lowenberg-DeBoer James McIntosh Matt Murray Seth Osborn Dave Shetty Ashoo Stevenson Craig Tevis Joe Werner Fletcher 《Precision Agriculture》2021,22(1):306-315
Precision Agriculture - Data-centric technology has not undergone widespread adoption in production agriculture but could address global needs for food security and farm profitability. Participants... 相似文献
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Esha Khullar Jay K. Shetty Kent D. Rausch M. E. Tumbleson Vijay Singh 《Cereal Chemistry》2011,88(3):223-227
Effects of phytase addition, germ, and pericarp fiber recovery were evaluated for the E‐Mill dry grind corn process. In the E‐Mill process, corn was soaked in water followed by incubation with starch hydrolyzing enzymes. For each phytase treatment, an additional phytase incubation step was performed before incubation with starch hydrolyzing enzymes. Germ and pericarp fiber were recovered after incubation with starch hydrolyzing enzymes. Preliminary studies on phytase addition resulted in germ with higher oil (40.9%), protein (20.0%), and lower residual starch (12.2%) contents compared to oil (39.1%), protein (19.2%), and starch (18.1%) in germ from the E‐Mill process without phytase addition. Phytase treatment resulted in lower residual starch contents in pericarp fiber (19.9%) compared to pericarp fiber without phytase addition (27.4%). Results obtained led to further investigation of effects of phytase on final ethanol concentrations, germ, pericarp fiber, and DDGS recovery. Final ethanol concentrations were higher in E‐Mill processing with phytase addition (17.4% v/v) than without addition of phytase (16.6% v/v). Incubation with phytases resulted in germ with 4.3% higher oil and 2.5% lower residual starch content compared to control process. Phytase treatment also resulted in lower residual starch and higher protein contents (6.58 and 36.5%, respectively) in DDGS compared to DDGS without phytase incubations (8.14 and 34.2%, respectively). Phytase incubation in E‐Mill processing may assist in increasing coproduct values as well as lead to increased ethanol concentrations. 相似文献
24.
Initial screening studies on potential of high phenolic-linked plant clonal systems for nitrate removal in cold latitudes 总被引:1,自引:0,他引:1
Derong Lin Lijiang Hu Hong You Dipayan Sarkar Baoshan Xing Kalidas Shetty 《Journal of Soils and Sediments》2010,10(5):923-932
Purpose
Nitrate removal is a major challenge in drinking water systems and is more acute in colder latitudes due to low metabolic conversion rates of biological systems. To achieve rapid nitrate removal, designed plant systems in greenhouse microenvironments has potential. In such localized controlled microenvironments, higher temperatures can be managed for plant growth in an appropriate growth medium through which nitrate-contaminated water is fed for denitrification. 相似文献25.
N Andarwulan D Fardiaz G A Wattimena K Shetty 《Journal of agricultural and food chemistry》1999,47(8):3158-3163
Seeds of the tropical tree Pangium edule Reinw. are widely eaten in Southeast Asia after some treatment or processing. Fermented seeds are a specialty in Indonesia and have been used as spices. Because the tree is wild and has not been cultivated commercially, the physiology of germinated seeds of this tree for food uses is not known. This study reports some biochemical changes during seed germination associated with antioxidant activity and the mobilization of lipids and phenolics. Lipid content decreased, whereas the dominant fatty acids did not change significantly. The dominant fatty acids were oleic acid (C(18:1(n-9))) and linoleic acid (C(18:2(n-6))). During germination, oleic acid decreased while linoleic acid increased proportionally. The hypocotyl synthesized chlorophyll and the tocol composition also changed substantially. The antioxidant activity of phenolic extract increased in proportion to the total phenolics. Guaiacol peroxidase and glucose-6-phosphate dehydrogenase, selected enzymes association with phenolic metabolism, showed that the increased activities coincided with increased total phenolics and free proline. 相似文献
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J. Sudisha S. R. Niranjana S. L. Sukanya R. Girijamba N. Lakshmi Devi H. Shekar Shetty 《Journal of pest science》2010,83(4):461-470
The efficacy of three commercial formulations of strobilurins, viz., trifloxystrobin, kresoxim-methyl, and azoxystrobin was
evaluated against sunflower downy mildew disease caused by Plasmopara halstedii under laboratory, greenhouse, and field conditions. Complete inhibition of sporangial sporulation, zoospore release, and
motility was observed with 2 μg ml−1 in trifloxystrobin, and 5 μg ml−1 for azoxystrobin and kresoxim-methyl. Seed treatment with different concentrations of strobilurins enhanced seed germination
and seedling vigor of sunflower to varying degrees compared to control. Highest seed germination was recorded at 10 μg ml−1 in kresoxim-methyl, and maximum seedling vigor was noticed with trifloxystrobin at 30 μg ml−1. The effect of strobilurins was tested as seed treatment, foliar application, and seed treatment followed by foliar application.
Under greenhouse conditions none of the concentrations used, either as seed treatment and foliar application, were phytotoxic.
For the three strobilurins, the seed treatment along with foliar application enhanced the protection of the plants as compared
to only the treatment of seeds. Foliar spray treatments alone provided an intermediate control of the disease. Trifloxystrobin
showed a better effect than kresoxim-methyl and azoxystrobin. Disease curative activity of trifloxystrobin was higher compared
to kresoxim-methyl and azoxystrobin. Tested fungicides when applied on adaxial leaf surface showed partial translaminar activity,
and disease inhibition was marginal. Loss of trifloxystrobin and azoxystrobin activity over time was low, indicating stable
rainfastness residual activity. A trend in protection against downy mildew disease similar to greenhouse results was evident
in the field trials. This is the first report of strobilurins exhibiting high activity against P. halstedii and is a promising fungicide for controlling sunflower downy mildew disease by seed treatment and foliar spray. 相似文献
28.
J. SudishaArun Kumar Kestur N. AmrutheshSiddapura R. Niranjana Hunthrike Shekar Shetty 《Crop Protection》2011,30(7):794-801
Modulation of physiological and biochemical defensive responses against downy mildew (DM) of pearl millet induced by raw cow milk (RCM) and five amino acids is reported in this paper. In vitro conditions, none of the inducer treatments showed inhibitory action on DM pathogen. Significant enhancement of seed germination and seedling vigor was observed in RCM and amino acids treated seeds. Under greenhouse conditions, significant protection against DM was provided by l-phenylalanine (68.6%), l-isoleucine (66.5%) and l-proline (55.7%) treatments. Among the RCM treatments, the 10% dilution proved to be the best by offering disease protection of 35%. Spatio-temporal time gap studies indicated that seed treatment with l-phenylalanine increased disease resistance four days after inoculation. Seed treatments with RCM and amino acids also enhanced the vegetative and reproductive growth parameters of pearl millet when compared to the control. A similar trend in protection against DM was evident in the field trials. At the biochemical level, defense related enzymes such as phenylalanine ammonia lyase (PAL), peroxidase (POX) and β-1,3-glucanase showed an increased activity in RCM and amino acids treated seedlings than in sterile distilled water control seedlings. The highest PAL activity was recorded in RCM (10 and 20%) whereas in case of amino acids, the highest activity was observed in l-proline and l-phenylalanine treatments. The highest activity of β-1,3-glucanase was recorded in RCM (20%) and l-phenylalanine. 相似文献
29.
Nandini P. Shetty Hans J. Lyngs Jørgensen Jens Due Jensen David B. Collinge H. Shekar Shetty 《European journal of plant pathology / European Foundation for Plant Pathology》2008,121(3):267-280
The production of reactive oxygen species (ROS) by the consumption of molecular oxygen during host–pathogen interactions is
termed the oxidative burst. The most important ROS are singlet oxygen (1O2), the hydroxyperoxyl radical (HO2·), the superoxide anion , hydrogen peroxide (H2O2), the hydroxyl radical (OH-) and the closely related reactive nitrogen species, nitric oxide (NO). These ROS are highly reactive, and therefore toxic,
and participate in several important processes related to defence and infection. Furthermore, ROS also play important roles
in plant biology both as toxic by-products of aerobic metabolism and as key regulators of growth, development and defence
pathways. In this review, we will assess the different roles of ROS in host–pathogen interactions with special emphasis on
fungal and Oomycete pathogens. 相似文献
30.
da Silva Pinto M Kwon YI Apostolidis E Lajolo FM Genovese MI Shetty K 《Journal of agricultural and food chemistry》2008,56(12):4386-4392
Fruits of seven fully ripened strawberry cultivars grown in Brazil (Dover, Camp Dover, Camarosa, Sweet Charlie, Toyonoka, Oso Grande, and Piedade) were evaluated for total phenolics, antioxidant activity based on DPPH radical scavenging assay, and functionality such as inhibition of alpha-amylase, alpha-glucosidase, and angiotensin I-converting enzyme (ACE) relevant for potentially managing hyperglycemia and hypertension. The total phenolics content ranged from 966 to 1571 microg of gallic acid/g of fruit fresh weight for Toyonoka and Dover, respectively. No correlation was found between total phenolics and antioxidant activity. The major phenolic compounds in aqueous extracts of strawberries were ellagic acid, quercetin, and chlorogenic acid. Strawberries had high alpha-glucosidase inhibitory activity. However, alpha-amylase inhibitory activity was very low in all cultivars. This suggested that strawberries could be considered as a potential dietary source with anti-hyperglycemic potential. The evaluated cultivars had no significant ACE inhibitory activity, reflecting low anti-hypertensive potential. 相似文献