The putative auxin efflux carrier <i>OsPIN3t</i> is involved in the drought stress response and drought tolerance

Zhang, Qian; Li, Jingjing; Zhang, Wenjiao; Yan, Shuning; Wang, Rui; Zhao, Jun; Li, Yujing; Zhou, Qi; Sun, Zongxiu; Zhang, Zhu

doi:10.1111/j.1365-313x.2012.05121.x

Cited by 183 publications

(128 citation statements)

References 62 publications

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“…However, OsPIN1 is highly expressed in flowers, and in particular in stamen filaments and at the junction region between anther and filament during late development (Xu et al, 2005). Similarly OsPIN3t , which shows high aminoacid sequence identity to AtPIN3 , is expressed in mature anthers (Zhang et al, 2012). Phenotypic analysis of double and triple OsPIN1 mutant flowers could shed light on the role of these transporters in stamen development.…”

Section: The Role Of Auxin Transport During Early and Late Phases Of mentioning

confidence: 99%

Auxin polar transport in stamen formation and development: how many actors?

Cardarelli¹,

Cecchetti²

2014

Front. Plant Sci.

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In flowering plants, proper development of stamens, the male reproductive organs, is required for successful sexual reproduction. In Arabidopsis thaliana normally six stamen primordia arise in the third whorl of floral organs and subsequently differentiate into stamen filaments and anthers, where male meiosis occurs, thus ending the early developmental phase. This early phase is followed by a late developmental phase, which consists of a rapid elongation of stamen filaments coordinated with anther dehiscence and pollen maturation, and terminates with mature pollen grain release at anthesis. Increasing evidence suggests that auxin transport is necessary for both early and late phases of stamen development. It has been shown that different members of PIN (PIN-FORMED) family are involved in the early phase, whereas members of both PIN and P-glycoproteins of the ABCB (PGP) transporter families are required during the late developmental phase. In this review we provide an overview of the increasing knowledge on auxin transporters involved in Arabidopsis stamen formation and development and we discuss their role and functional conservation across plant species.

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Section: The Role Of Auxin Transport During Early and Late Phases Of mentioning

confidence: 99%

Auxin polar transport in stamen formation and development: how many actors?

Cardarelli¹,

Cecchetti²

2014

Front. Plant Sci.

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“…In contrast, water stress conditions led to an increase in the activity of α-amylase in salt tolerance mechanism. Comparing with adult plant, the mechanisms of stress tolerance in germinating phase are poorly interpreted and might be related to a series of factors that are inherent to the species and environment [26,27].…”

Section: Introductionmentioning

confidence: 99%

Metabolic Processes During Seed Germination

Ali¹,

Elozeiri²

2017

Advances in Seed Biology

129

102

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Seed germination is crucial stage in plant development and can be considered as a determinant for plant productivity. Physiological and biochemical changes followed by morphological changes during germination are strongly related to seedling survival rate and vegetative growth which consequently affect yield and quality. This study is aimed to focus on proceeding of the most vital metabolic processes namely reserve mobilization, phytohormonal regulation, glyoxylate cycle and respiration process under either stressful or non-stressful conditions that may be led to suggest and conduct the more successful experimental improvements. Seed imbibition triggered the activation of various metabolic processes such as synthesis of hydrolytic enzymes which resulted in hydrolysis of reserve food into simple available form for embryo uptake. Abiotic stresses potentially affect seed germination and seedling establishment through various factors, such as a reduction in water availability, changes in the mobilization of stored reserves, hormonal balance alteration and affecting the structural organization of proteins. Recent strategies for improving seed quality involved classical genetic, molecular biology and invigoration treatments known as priming treatments. H 2 O 2 accumulation and associated oxidative damages together with a decline in antioxidant mechanisms can be regarded as a source of stress that may suppress germination. Seed priming was aimed primarily to control seed hydration by lowering external water potential, or shortening the hydration period.

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“…Although, molecular understanding of the crosstalk between polar auxin transport and drought stress is poorly understood, recent studies have indicated towards involvement of auxin transporters in drought stress. Zhang et al ( 2012 ) showed involvement of auxin effl ux carrier, OsPIN3t, in drought stress response and drought tolerance. Overexpression of OsPIN3t in rice led to upregulation of drought responsive genes, OsDREB2A and OsAP37 , and increased tolerance to drought.…”

Section: Auxin and Drought Stressmentioning

confidence: 99%

Emerging Roles of Auxin in Abiotic Stress Responses

Sharma

Borah

et al. 2015

Elucidation of Abiotic Stress Signaling in Plants

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Auxin is among the key growth regulators that play diverse roles in virtually all aspects of plant growth and development. Intensive investigations during the past two decades have helped in elucidation of auxin perception and signal transduction mechanisms operative in plants. In addition to its primary role in regulating plant development, several studies in recent years have provided unfl inching evidence for the involvement of auxin in abiotic stress responses. Functional genomics studies and genome-wide expression analysis have revealed altered expression of auxin-responsive genes, such as Aux/IAA , GH3 , SAURs , and ARFs , under abiotic stress conditions . Variations in endogenous levels of auxin at global and local levels under various abiotic stress conditions have been associated with phenotypic changes and provided intriguing evidences regarding its role in response to environmental changes. Modulation of reactive oxygen species (ROS) levels in response to exogenous auxin as well as to drought, salinity, and ABA have indicated towards a complex relationship network between auxin, ROS, and abiotic stresses in plants. The advent of recent functional genomics technologies has led to identifi cation of several candidate genes that may modulate crosstalk between auxin and abiotic stresses. This chapter discusses auxin homeostasis, signal transduction mechanisms, and how these processes are modulated under abiotic stresses, thus emphasizing on the emerging roles of auxin as a key integrator of abiotic stress pathways and plant development.

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The putative auxin efflux carrier OsPIN3t is involved in the drought stress response and drought tolerance

Cited by 183 publications

References 62 publications

Auxin polar transport in stamen formation and development: how many actors?

Auxin polar transport in stamen formation and development: how many actors?

Metabolic Processes During Seed Germination

Emerging Roles of Auxin in Abiotic Stress Responses

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