scholarly journals Synergy Assessment for Plant Growth by Independent Joint Action Theory

HortScience ◽  
2021 ◽  
pp. 1-4
Author(s):  
Zhengyu Huang ◽  
Kimberly Ann Falco
Keyword(s):  
Plant Growth ◽  
Joint Action ◽  
Scientific Community ◽  
Action Theory ◽  
Unmet Need ◽  
Pesticide Mixture ◽  
Mixture Effects ◽  
Percent Mortality ◽  
The Difference ◽  
Greenhouse Assay

Calculating the predicted biological efficacy of a mixture and determining the significance of the difference between the predicted efficacy and the measured efficacy of that mixture are fundamental when assessing the synergy of mixtures. The Independent Joint Action theory and Bliss’s formula are well-known and widely accepted for predicting pesticide mixture effects that are expressed in terms of percent mortality. Bliss’s formula, however, is not applicable to growth-affecting components, such as plant growth regulators. Therefore, there is an unmet need of critical importance: an appropriate method for assessing synergy of growth-affecting mixtures needs to be identified within the scientific community. The formula, G(1 + 2..n) = G1G2…Gn/(GCTL)n−1, which was derived from the Independent Joint Action theory, is presented for calculating the predicted efficacy for mixtures of growth-affecting components that either promote or inhibit growth. Its application is demonstrated by analyzing data from a greenhouse assay in which a mixture of S-abscisic acid and gibberellic acid was used to promote the growth of corn seedlings.

Pesticide mixture effects on liver protein abundance in HepaRG cells

Toxicology ◽  
2021 ◽  
pp. 152839
Author(s):  
Felix F. Schmidt ◽  
Dajana Lichtenstein ◽  
Hannes Planatscher ◽  
Almut Mentz ◽  
Joern Kalinowski ◽  
...  
Keyword(s):  
Protein Abundance ◽  
Liver Protein ◽  
Pesticide Mixture ◽  
Mixture Effects ◽  
Heparg Cells

Scenarios as Tools of the Scientific Imagination: The Case of Climate Projections

2021 ◽  
Vol 29 (1) ◽  
pp. 36-61
Author(s):  
Michael Poznic ◽  
Rafaela Hillerbrand
Keyword(s):  
Scientific Community ◽  
Climate Science ◽  
The Other ◽  
Climate Projections ◽  
Public Realm ◽  
The Public ◽  
Other Hand ◽  
The Difference ◽  
The One ◽  
Scientific Imagination

Climatologists have recently introduced a distinction between projections as scenario-based model results on the one hand and predictions on the other hand. The interpretation and usage of both terms is, however, not univocal. It is stated that the ambiguities of the interpretations may cause problems in the communication of climate science within the scientific community and to the public realm. This paper suggests an account of scenarios as props in games of make-belive. With this account, we explain the difference between projections that should be make-believed and other model results that should be believed.

scholarly journals An Explanation About Canonical Forms and Real Molecule in Resonance Theory, Through Instructors Own Sketches Analogy

2020 ◽  
Author(s):  
faiz ahmed
Keyword(s):  
Scientific Knowledge ◽  
Scientific Community ◽  
Daily Life ◽  
Subject Area ◽  
Canonical Forms ◽  
Canonical Structure ◽  
Resonance Theory ◽  
Personal Experiences ◽  
The Subject ◽  
The Difference

<p>In elementary chemistry courses students often demonstrate difficulty with real understanding of Resonance Theory i.e. canonical structure vs. real molecule difference, so unanswered puerile questions during lecture made the subject boring. Particularly students unable to understand the difference between a real microscopic moiety and it’s proposed sketch or model at early stages of their learning. In such situations use of suitable analogy other than the subject area make the teaching more effective. Using an analogy from the daily life act as a powerful tool to explain curious questions efficiently to develop the interest of the students in subject. Sharing of personal experiences and analogies among scientific community is an effective way to spread scientific knowledge magnificently.<br></p>

scholarly journals Endophytic Fungi of Olive Tree

2020 ◽  
Vol 8 (9) ◽  
pp. 1321 ◽  
Author(s):  
Rosario Nicoletti ◽  
Claudio Di Vaio ◽  
Chiara Cirillo
Keyword(s):  
Plant Growth ◽  
Sustainable Agriculture ◽  
Endophytic Fungi ◽  
Olea Europaea ◽  
Scientific Community ◽  
Olive Tree ◽  
General Interest ◽  
Symbiotic Interactions ◽  
Crop Cycle ◽  
Olea Europaéa

In addition to the general interest connected with investigations on biodiversity in natural contexts, more recently the scientific community has started considering occurrence of endophytic fungi in crops in the awareness of the fundamental role played by these microorganisms on plant growth and protection. Crops such as olive tree, whose management is more and more frequently based on the paradigm of sustainable agriculture, are particularly interested in the perspective of a possible applicative employment, considering that the multi-year crop cycle implies a likely higher impact of these symbiotic interactions. Aspects concerning occurrence and effects of endophytic fungi associated with olive tree (Olea europaea) are revised in the present paper.

Uptake, Translocation, and Herbicidal Effect of Diphenamid

Weed Science ◽  
1970 ◽  
Vol 18 (6) ◽  
pp. 692-696 ◽  
Author(s):  
J. Deli ◽  
G. F. Warren
Keyword(s):  
Cell Division ◽  
Plant Growth ◽  
Avena Sativa ◽  
Shoot Growth ◽  
Inhibitory Effect ◽  
Root Tip ◽  
Metabolic Inhibitor ◽  
Ipomoea Hederacea ◽  
Root And Shoot Growth ◽  
The Difference

Root application ofN,N-dimethyl-2,2-diphenylacetamide (diphenamid) caused reduction of root and shoot growth of oats (Avena sativaL., var. Jaycee) seedlings. Shoot application did not affect plant growth, but studies with labeled diphenamid showed that diphenamid will enter also through the shoot. In ivyleaf morningglory (Ipomoea hederaceaL.), a considerable amount of label was translocated from the roots to the shoots, but not in oats seedlings. The difference in tolerance between these two species (oats susceptible, morningglory resistant) may lie in the ability of morningglory to translocate diphenamid out of the roots into the shoots faster than oats. The inhibitory effect of diphenamid was restricted to the site of uptake. Reduction in shoot growth of treated plants was the result of the limited root system and it was not a direct effect of diphenamid. Diphenamid was 10 times as toxic to oats as its metabolites. Oats seedlings inhibited by diphenamid for up to 5 days, and then placed in water recovered from the diphenamid caused inhibition. The resumed root growth appeared to be normal. The amount of uptake of14C-labeled sucrose by excised roots treated with 10−5M diphenamid was equal to that in untreated roots; however, more sugar was incorporated into the untreated roots than the treated roots. It appears that diphenamid is a reversible metabolic inhibitor; it inhibits cell division in the root tip perhaps by limiting utilization of substrates in the cells.

scholarly journals Validity and reliability in qualitative research

Curationis ◽  
1993 ◽  
Vol 16 (2) ◽  
Author(s):  
H. I. L. Brink
Keyword(s):  
Qualitative Research ◽  
Scientific Community ◽  
Validity And Reliability ◽  
Qualitative Work ◽  
Research Findings ◽  
The Difference ◽  
Key Aspects ◽  
Good Research

Validity and reliability are key aspects of all research. Meticulous attention to these two aspects can make the difference between good research and poor research and can help to assure that fellow scientists accept findings as credible and trustworthy. This is particularly vital in qualitative work, where the researcher’s subjectivity can so readily cloud the interpretation of the data, and where research findings are often questioned or viewed with scepticism by the scientific community.

Method on Distinguishing Permafrost and Talik Regions in the Great Khingan Mountains by Analyzing the Characteristics of Specific Plants

2012 ◽  
Vol 550-553 ◽  
pp. 2546-2550
Author(s):  
Wei Wei Guo ◽  
Shao Min Du ◽  
Yong Quan Sun ◽  
Di Wang
Keyword(s):  
Plant Growth ◽  
Common Species ◽  
Permafrost Region ◽  
Vaccinium Uliginosum ◽  
Ledum Palustre ◽  
Original Ecology ◽  
The Difference ◽  
Two Sides ◽  
Great Khingan Mountains ◽  
Larix Gmelini

In the fieldwork in the Great Khingan Mountains, it is practical and easy to distinguish permafrost region or talik region by analyzing the characteristics of the plants growing on them. Generally speaking, permafrost there tends to degenerate from south to north, but there are some individual places where remind original ecology of permafrost. After permafrost degenerate into the talik region, the condition of plant growth has changed. We can distinguish permafrost and talik region by the difference of plants growing status there. Some common species that specifically grow in permafrost or talik region have also been listed and introduced in this paper. Specifically, plants growing in permafrost region include larix gmelini, birch, vaccinium uliginosum, ledum palustre, vaccinium vitis-idaea, bilberry, pinus sylvestnis var. mongolica litv, low birch thicket, adina racemosa and so on. Meanwhile the plants live in talik region include peridium aquilinum, xylosma racemosum, daylily, milkvetch. The list of plants can be used to distinguish permafrost region and talik in the field. It is crucial for constructions to recognize if the construction area is permafrost or talik region. The change of talik has its two sides to constructions. On the upside, it can increase groundwater storage, and we can regard the future projects as thawing projects. On the downside, existing projects would arise thawing settlement.

Nodulation of Legumes in the Sudan III. Response of Haricot Bean to Inoculation

1974 ◽  
Vol 10 (1) ◽  
pp. 45-50 ◽  
Author(s):  
H. A. Habish ◽  
Hassan M. Ishag
Keyword(s):  
Plant Growth ◽  
Nitrogen Content ◽  
Seed Yield ◽  
Field Experiments ◽  
Local Strain ◽  
Growing Seasons ◽  
Seed Inoculation ◽  
Sudan Iii ◽  
The Difference ◽  
Better Than

SUMMARYField experiments conducted in two localities in two growing seasons on the effect of inoculating haricot bean showed that a local strain of Rhizobium significantly improved nodulation and usually increased the nitrogen content of plants. In three out of four experiments, increases in seed yield were obtained ranging from 20–145 Per cent (significant in two cases). Inoculation was better than 43 kg. N/ha. of combined nitrogen but not better than 86 kg. N. Soil inoculation gave better early nodulation than seed inoculation, but the difference diminished in the later stages of plant growth.

Coal-smoke pollution modifies physio-chemical characteristics of tissues during the ontogeny of Peristrophe bicalyculata

Biologia ◽  
2008 ◽  
Vol 63 (6) ◽  
Author(s):  
Farah Nighat ◽  
Mahmooduzzafar ◽  
Muhammad Iqbal
Keyword(s):  
Plant Growth ◽  
Reductase Activity ◽  
Thermal Power ◽  
Polluted Site ◽  
Flowering Stage ◽  
Plant Parts ◽  
Smoke Pollution ◽  
The Difference ◽  
Pattern Of Variation ◽  
Peristrophe Bicalyculata

AbstractCoal-smoke emissions of a thermal power plant affected the physio-chemical status of Peristrophe bicalyculata (Reth) Nees, as observed at the pre-flowering, flowering and post-flowering stages of plant growth. The nitrate level was raised while nitrate reductase activity, and the soluble protein content of leaf declined heavily at the polluted site during different stages of plant growth, compared to the control. The rate of photosynthesis also decreased under the pollution stress. Sugar level in root, stem and leaves increased with growing age of the plant but was always lower at the polluted site than at the reference site. In roots, the difference was marginal till flowering stage and quite conspicuous afterwards; stems showed a reverse pattern of variation. Sulphur content was higher at the polluted site in all the organs and at each stage of the plant life. The Zn and Fe concentrations were reduced in all plant parts under the pollution stress. Copper content in root was consistently low at the polluted site. In the stem and leaves, however, it was almost equal on both the sites at the pre-flowering stage but showed a wide difference during the later part of plant ontogeny.

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