scholarly journals Translatable RNA Populations Associated with Maintenance of Primary Root Elongation and Inhibition of Mesocotyl Elongation by Abscisic Acid in Maize Seedlings at Low Water Potentials

1995 ◽  
Vol 109 (2) ◽  
pp. 593-601 ◽  
Author(s):  
I. N. Saab ◽  
THD. Ho ◽  
R. E. Sharp
Keyword(s):  
Abscisic Acid ◽  
Root Elongation ◽  
Primary Root ◽  
Maize Seedlings ◽  
Water Potentials ◽  
Mesocotyl Elongation

Confirmation that abscisic acid accumulation is required for maize primary root elongation at low water potentials

1994 ◽  
Vol 45 (Special_Issue) ◽  
pp. 1743-1751 ◽  
Author(s):  
Robert E. Sharp ◽  
Yajun Wu ◽  
Gary S. Voetberg ◽  
Imad N. Saab ◽  
Mary E. LeNoble
Keyword(s):  
Abscisic Acid ◽  
Root Elongation ◽  
Primary Root ◽  
Water Potentials ◽  
Acid Accumulation

scholarly journals Abscisic Acid Accumulation Maintains Maize Primary Root Elongation at Low Water Potentials by Restricting Ethylene Production

2000 ◽  
Vol 122 (3) ◽  
pp. 967-976 ◽  
Author(s):  
William G. Spollen ◽  
Mary E. LeNoble ◽  
Timmy D. Samuels ◽  
Nirit Bernstein ◽  
Robert E. Sharp
Keyword(s):  
Abscisic Acid ◽  
Ethylene Production ◽  
Root Elongation ◽  
Primary Root ◽  
Water Potentials ◽  
Acid Accumulation

Primary Root Elongation Rate and Abscisic Acid Levels of Maize in Response to Water Stress

Crop Science ◽  
2011 ◽  
Vol 51 (1) ◽  
pp. 157-172 ◽  
Author(s):  
Kristen A. Leach ◽  
Lindsey G. Hejlek ◽  
Leonard B. Hearne ◽  
Henry T. Nguyen ◽  
Robert E. Sharp ◽  
...  
Keyword(s):  
Abscisic Acid ◽  
Water Stress ◽  
Root Elongation ◽  
Primary Root ◽  
Elongation Rate ◽  
Root Elongation Rate ◽  
Response To Water

Abscisic acid employs NRP‐dependent PIN2 vacuolar degradation to suppress auxin‐mediated primary root elongation in Arabidopsis

2021 ◽  
Author(s):  
Yanying Wu ◽  
Yue Chang ◽  
Liming Luo ◽  
Wenqi Tian ◽  
Qingqiu Gong ◽  
...  
Keyword(s):  
Abscisic Acid ◽  
Root Elongation ◽  
Primary Root

scholarly journals Assay system for mesocotyl elongation and hydrotropism of maize primary root in response to low moisture gradient

BioTechniques ◽  
2021 ◽  
Vol 71 (4) ◽  
pp. 516-527
Author(s):  
Mery Nair Sáenz-Rodríguez ◽  
Gladys Iliana Cassab López
Keyword(s):  
Primary Root ◽  
Test System ◽  
Moisture Gradient ◽  
Maize Seedlings ◽  
Growth Environment ◽  
Mesocotyl Elongation ◽  
Maize Genetic ◽  
Emergence Phase ◽  
Gradient Condition ◽  
Potential Use

We designed and validated a test system that simulates a growth environment for  Zea mays L. maize seedlings under conditions of low moisture gradient in darkness. This system allowed us to simultaneously measure mesocotyl elongation and the primary root hydrotropic response in seedlings before the emergence phase in a collection of maize hybrids. We found great variation in these two traits with statistically significant reduction of their elongations under the low moisture gradient condition that indicate the richness of maize genetic diversity. Hence, the objective of designing a new test system that evaluates the association between these underground traits with the potential use to measure other traits in maize seedlings related to early vigor was achieved.

scholarly journals Abscisic acid modulates auxin-responsive hypocotyl elongation

2021 ◽  
Author(s):  
Ryan Emenecker ◽  
Joseph Cammarata ◽  
Irene Yuan ◽  
Lucia Strader
Keyword(s):  
Abscisic Acid ◽  
Root Elongation ◽  
Plant Hormone ◽  
Primary Root ◽  
Hypocotyl Elongation ◽  
Forward Genetics ◽  
Rna Seq ◽  
Wild Type ◽  
Inhibitory Effects ◽  
Aba Biosynthesis

Auxin regulates many aspects of plant growth and development in concert with other plant hormones. Auxin interactions with these other phytohormones to regulate distinct processes is not fully understood. Using a forward genetics screen designed to identify seedlings resistant to the suppressive effects of auxin on dark-grown hypocotyl elongation, we identified a mutant defective in ABA ALDEHYDE OXIDASE3 (AAO3), which encodes for the enzyme that carries out the final step in the biosynthesis of the plant hormone abscisic acid (ABA). We found that all examined ABA deficient mutants display resistance to the inhibitory effects of auxin on dark-grown hypocotyl elongation, suggesting that aspects of ABA signaling are downstream of auxin in regulating dark-grown hypocotyl elongation. Conversely, these mutants display wild type responsiveness to auxin in root elongation assays, suggesting that ABA does not act downstream of auxin in regulating elongation of the root. Our RNA-seq analysis suggests that many auxin-repressed genes in the hypocotyl require an intact ABA pathway for full repression. Our results suggest a model in which auxin partially requires intact ABA biosynthesis in order to regulate hypocotyl elongation, but not to regulate primary root elongation, suggesting that the genetic interactions between these two pathways are tissue-dependent.

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