skip to main content
US FlagAn official website of the United States government
dot gov icon
Official websites use .gov
A .gov website belongs to an official government organization in the United States.
https lock icon
Secure .gov websites use HTTPS
A lock ( lock ) or https:// means you've safely connected to the .gov website. Share sensitive information only on official, secure websites.

Attention:

The NSF Public Access Repository (PAR) system and access will be unavailable from 9:30 PM ET on Friday, January 23 until 7:00 AM ET on Saturday, January 24 due to maintenance. We apologize for the inconvenience.


Title: 1‐Aminocyclopropane‐1‐carboxylic acid stimulates tomato pollen tube growth independently of ethylene receptors
Award ID(s):
1714993
PAR ID:
10328871
Author(s) / Creator(s):
; ; ;
Date Published:
Journal Name:
Physiologia Plantarum
Volume:
173
Issue:
4
ISSN:
0031-9317
Page Range / eLocation ID:
2291 to 2297
Format(s):
Medium: X
Sponsoring Org:
National Science Foundation
More Like this
  1. The title compound, C6H13N2+·Cl, is as an amidinium salt that was isolated as unexpected product from the reaction between acetonitrile, chloroform and pyrrolidine under refluxing conditions. The packing features two N—H...Cl hydrogen bonds to generate centrosymmetric tetramers (two cations and two anions) and van der Waals interactions. 
    more » « less
  2. Abstract The goal of this paper is to investigate the missing part of the story about the relationship between the orthogonal polynomial ensembles and Painlevé equations. Namely, we consider the $$q$$-Racah polynomial ensemble and show that the one-interval gap probabilities in this case can be expressed through a solution of the discrete $$q$$-P$$\left (E_7^{(1)}/A_{1}^{(1)}\right )$$ equation. Our approach also gives a new Lax pair for this equation. This Lax pair has an interesting additional involutive symmetry structure. 
    more » « less
  3. A<sc>bstract</sc> In perturbative string theory, one is generally interested in asymptotic observables, such as the S-matrix in flat spacetime, and boundary correlation functions in anti-de Sitter spacetime. However, there are backgrounds in which such observables do not exist. We study examples of such backgrounds in 1 + 1 dimensional string theory. In these examples, the Liouville wall accelerates and can become spacelike in the past and/or future. When that happens, the corresponding null infinity, at which the standard scattering states are defined, is shielded by the Liouville wall. We compute scattering and particle production amplitudes in these backgrounds in the region in parameter space where the wall remains timelike, and discuss the continuation of this picture to the spacelike regime. We also discuss the physics from the point of view of the dynamics of free fermions in backgrounds with a time-dependent Fermi surface. 
    more » « less