Cross Talk of Signaling Pathways Between ABA and Other Phytohormones - Abscisic Acid: Metabolism, Transport and Signaling - page 236

Chapter 12
Cross Talk of Signaling Pathways Between
ABA and Other Phytohormones

Jiaqiang Sun and Chuanyou Li

Abstract The phytohormone abscisic acid (ABA) regulates many aspects of plant
development and adaptation to environmental stresses. Molecular genetics stud-
ies have significantly advanced our understanding on the molecular basis of ABA
signaling in seeds and seedlings. In this topic chapter, we review recent advances
on the cross talk of signaling pathways between ABA and other phytohormones.

Keywords ABA · Phytohormones · Cross talk

12.1 Introduction

The phytohormone abscisic acid (ABA) is well known for its regulatory roles in
integrating environmental constraints with the developmental programs of plants.
ABA promotes seed dormancy, inhibition of germination and lateral root (LR) for-
mation, and reduction of water transpiration through stomatal pores (Hauser et al.
2011 ). During the last decade, tremendous progresses have been made in identi-
fying mechanisms and genes involved in ABA metabolism, transport, and signal
transduction. Here, we aim to review the interaction networks between ABA and
other hormone-signaling pathways.