DO MAIZE AND PEPPER PLANTS DEPEND ON MYCORRHIZAE IN TERMS OF PHOSPHORUS AND ZINC UPTAKE?

2012 ◽  
Vol 35 (11) ◽  
pp. 1639-1656 ◽  
Author(s):  
Ibrahim Ortas
Keyword(s):  
Zinc Uptake ◽  
Pepper Plants

MEFLUIDIDE IMPROVED THE DEVELOPMENT OF TERMINAL FLOWER BUDS OF CHILLED PEPPER PLANTS

HortScience ◽  
1990 ◽  
Vol 25 (9) ◽  
pp. 1081G-1081
Author(s):  
Jing-fen Chen ◽  
Paul H. Li ◽  
David W. Davis
Keyword(s):  
Stress Growth ◽  
Flower Buds ◽  
Technical Grade ◽  
Days To Flowering ◽  
Terminal Flower ◽  
Cold Room ◽  
Chilling Temperatures ◽  
Adverse Influence ◽  
Post Stress ◽  
Pepper Plants

Exposure of young pepper plants to chilling temperatures delays the development of terminal flower buds to flowering during post-stress growth. Degree of adverse influence depends on chilling intensity, exposure duration and varietal sensitivity. `Ma Belle' pepper plants were grown in a greenhouse (GH) during winter months on the St. Paul campus, No supplemental lighting was provided. When plants were at the 2- to 3-leaf stage, they were foliar sprayed with mefluidide (Technical grade) at 0, 5, 10 and 15 ppm. One day after treatment, some plants were transferred from GH to a cold room (3° ∼4°C day/night) with 12-h photoperiod. Treatad plants remaining in the GH served as the control. Plants were chilled for 1, 2, 4 and 6 days and then brought back to the GH for post-stress growth and development observation. Treated and untreated plants grown in the GH showed no difference in days to flowering, and reached 50% flowering at about 62 days after treatment. When untreated plants were chilled for 1,2,4 and 6 days, they showed a delay of 8, 18, 30 and 34 days, respectively, to flowering, If not killed, as compared to the control The long delay to flowering was due to the injury of the terminal flower buds. After 4 and 6 days of chilling, most terminal flower buds were killed. However, when plants were treated with mefluidide and subsequently chilled days to flowering were significantly shortened. A difference of 10-12 days was observed between chilled untreated plants and chilled treated plants. Concentrations of 5 to 15 ppm were equally effective in protection against chilling.

Effects of maternal smoking on zinc uptake by placental microvillous border membranes

Placenta ◽  
1993 ◽  
Vol 14 (4) ◽  
pp. A8
Author(s):  
P. Bush ◽  
D.R. Abramovich ◽  
P.J.A. Aggett ◽  
M. Bain ◽  
M.D. Burke ◽  
...  
Keyword(s):  
Maternal Smoking ◽  
Zinc Uptake

Hyperhydricity in pepper plants regenerated in vitro: involvement of BiP (Binding Protein) and ultrastructural aspects

1999 ◽  
Vol 19 (1) ◽  
pp. 81-87 ◽  
Author(s):  
M. A. Fontes ◽  
W. C. Otoni ◽  
S. M. B. Carolino ◽  
S. H. Brommonschenkel ◽  
E. P. B. Fontes ◽  
...  
Keyword(s):  
Binding Protein ◽  
Pepper Plants

The regulation of zinc uptake in wheat plants

Plant Science ◽  
1998 ◽  
Vol 137 (1) ◽  
pp. 1-12 ◽  
Author(s):  
Guillermo E. Santa-Marı́a ◽  
Daniel H. Cogliatti
Keyword(s):  
Zinc Uptake

Zinc uptake and HMA4 activity are required for micro- and macroelement balance in tobacco (Nicotiana tabacum)

2021 ◽  
Vol 191 ◽  
pp. 112911
Author(s):  
Verena Liedschulte ◽  
James Nicolas Duncan Battey ◽  
Hélène Laparra ◽  
Samuel Kleinhans ◽  
Lucien Bovet ◽  
...  
Keyword(s):  
Nicotiana Tabacum ◽  
Zinc Uptake

scholarly journals Functional Analysis of the Bacillus subtilis Zur Regulon

2002 ◽  
Vol 184 (23) ◽  
pp. 6508-6514 ◽  
Author(s):  
Ahmed Gaballa ◽  
Tao Wang ◽  
Rick W. Ye ◽  
John D. Helmann
Keyword(s):  
Bacillus Subtilis ◽  
Metal Ion ◽  
Dna Microarrays ◽  
Optimal Growth ◽  
Zinc Uptake ◽  
Uptake System ◽  
Mobility Shift ◽  
Transport Pathway ◽  
Dnase I Footprinting ◽  
Transporter Family

ABSTRACT The Bacillus subtilis zinc uptake repressor (Zur) regulates genes involved in zinc uptake. We have used DNA microarrays to identify genes that are derepressed in a zur mutant. In addition to members of the two previously identified Zur-regulated operons (yciC and ycdHI-yceA), we identified two other genes, yciA and yciB, as targets of Zur regulation. Electrophoretic mobility shift experiments demonstrated that all three operons are direct targets of Zur regulation. Zur binds to an ∼28-bp operator upstream of the yciA gene, as judged by DNase I footprinting, and similar operator sites are found preceding each of the previously described target operons, yciC and ycdHI-yceA. Analysis of a yciA-lacZ fusion indicates that this operon is induced under zinc starvation conditions and derepressed in the zur mutant. Phenotypic analyses suggest that the YciA, YciB, and YciC proteins may function as part of the same Zn(II) transport pathway. Mutation of yciA or yciC, singly or in combination, had little effect on growth of the wild-type strain but significantly impaired the growth of the ycdH mutant under conditions of zinc limitation. Since the YciA, YciB, and YciC proteins are not obviously related to any known transporter family, they may define a new class of metal ion uptake system. Mutant strains lacking all three identified zinc uptake systems (yciABC, ycdHI-yceA, and zosA) are dependent on micromolar levels of added zinc for optimal growth.

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