Gene/Protein
Disease
Symptom
Drug
Enzyme
Compound
Pivot Concepts:
Gene/Protein
Disease
Symptom
Drug
Enzyme
Compound
Target Concepts:
Gene/Protein
Disease
Symptom
Drug
Enzyme
Compound
Query: EC:3.2.1.26 (
invertase
)
4,927
document(s) hit in 31,850,051 MEDLINE articles (0.00 seconds)
Treatment of the bark ofHevea brasiliensis with 2,4-dichlorophenoxyacetic acid (
2,4-D
) or l-naphthylacetic acid (NAA) greatly increases sucrose level,
invertase
activity and sucrose utilization in the latex; the efficacy of
2,4-D
is considerably greater than that of NAA. The greater sucrose utilization is the consequence of increased
invertase
activity. The changes occur as soon as the first tapping following bark treatment. It is suggested that the rise in both sucrose level and utilization in the latex serum mediate the effect of auxins on latex production. This is most likely related to a faciliation of latex outflow resulting from an increase in the osmotic and turgor pressure in the laticiferous tissue, as well as to enhanced regeneration of latex.The latex
invertase
has been found to be of a weakly alkaline type, with a sharp pH optimum at 7.15-7.20 in citrate-phosphate buffer. Its activity falls of rapidly on the acid side, being almost zero at pH 6.4. Since the natural pH of latex generally varies between pH 6.5 and 7.0, it is suggested that pH is an important factor in the regulation of
invertase
activity in the latex, and that the limiting nature of
invertase
-mediated sucrose hydrolysis in latex serum is caused by unfavourable conditions for
invertase
activity rather than by a scarcity of this enzyme.
...
PMID:Stimulatory effects of 2,4-dichlorophenoxyacetic acid and of 1-naphthylacetic acid on sucrose level, invertase activity and sucrose utilization in the latex ofHevea brasiliensis. 2450 63
The present work is emphasised with the herbicidal tolerance of Azolla pinnata R.Br. and its modulation with TiO
2
nano-particle. Both carbohydrate and nitrogen metabolism were effected with
2,4-D
as herbicide and in few cases TiO
2
-NP had recovered few detrimental effects. From the nutrient status in Azolla it recorded the recovery of nitrogen as well as potassium by TiO
2
-NP but not in case of phosphorus. However, a conversion of nitrate to ammonium was more induced by TiO
2
-NP under herbicidal toxicity. Similar results were obtained for inter-conversion of amino acid-nitrate pool, but no changes with glutamine synthase activity with TiO
2
-NP. Initially, the effects of
2,4-D
was monitored with changes of chlorophyll content but had not been recovered with nanoparticle. Photosynthetic reserves expressed as both total and reducing sugar were insensitive to TiO
2
-NP interference but activity of soluble and wall bound
invertase
was in reverse trend as compared to control. The
2,4-D
mediated changes of redox and its oxidative stress was ameliorated in plants with over expressed ADH activity. As a whole the Azolla bio system with TiO
2
supplementation may be useful in sustenance against
2,4-D
toxicity through recovery of nitrogen metabolism. Thus, Azolla-TiO
2
-NP bio system would be realised to monitor the herbicidal toxicity in soil and its possible bioremediation.
...
PMID:Modulation of physiological responses with TiO
2
nano-particle in Azolla pinnata R.Br. under 2,4-D toxicity. 2987 37
