Exogenous Application of Putrescine Ameliorates the Effect of High Temperature in <i>Gossypium hirsutum</i> L. Flowers and Fruit Development

Bibi, Amina; Oosterhuis, Derrick M.; Gonias, Evangelos D.

doi:10.1111/j.1439-037x.2009.00414.x

Cited by 28 publications

(21 citation statements)

References 30 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…[52][53][54] Several other studies showed that exogenous application of different PAs helped to overcome the stress effect to some extent. 55,56 The effect of salinity stress on the activation of ADC, as well as its increased transcript level was observed in NaCltolerant rice cultivars exposed to 150 mM NaCl for 12 h. 57 Salt and osmotic stress induced the accumulation of Put and Spd and increased ADC activity in the roots and leaves of lupine (Lupinus luteus) seedlings and in apple (Malus domestica). 58,59 Increased 63 Drought stress in rice also increased bound and free Put with increased resistance.…”

Section: Metal Stressmentioning

confidence: 99%

Polyamines in response to abiotic stress tolerance through transgenic approaches

2014

View full text Add to dashboard Cite

The distribution, growth, development and productivity of crop plants are greatly affected by various abiotic stresses. Worldwide, sustainable crop productivity is facing major challenges caused by abiotic stresses by reducing the potential yield in crop plants by as much as 70%. Plants can generally adapt to one or more environmental stresses to some extent. Physiological and molecular studies at transcriptional, translational, and transgenic plant levels have shown the pronounced involvement of naturally occurring plant polyamines (PAs), in controlling, conferring, and modulating abiotic stress tolerance in plants. PAs are small, low molecular weight, non-protein polycations at physiological pH, that are present in all living organisms, and that have strong binding capacity to negatively charged DNA, RNA, and different protein molecules. They play an important role in plant growth and development by controlling the cell cycle, acting as cell signaling molecules in modulating plant tolerance to a variety of abiotic stresses. The commonly known PAs, putrescine, spermidine, and spermine tend to accumulate together accompanied by an increase in the activities of their biosynthetic enzymes under a range of environmental stresses. PAs help plants to combat stresses either directly or by mediating a signal transduction pathway, as shown by molecular cloning and expression studies of PA biosynthesis-related genes, knowledge of the functions of PAs, as demonstrated by developmental studies, and through the analysis of transgenic plants carrying PA genes. This review highlights how PAs in higher plants act during environmental stress and how transgenic strategies have improved our understanding of the molecular mechanisms at play.

show abstract

Section: Metal Stressmentioning

confidence: 99%

Polyamines in response to abiotic stress tolerance through transgenic approaches

2014

View full text Add to dashboard Cite

show abstract

“…Regarding polyamine metabolism in cotton under abiotic stresses, Bibi et al (2010) [18] reported that application of PUT on cotton flowers resulted in increases in PUT levels of the ovary and seed set efficiency under conditions of heat stress, while SPD and SPM concentrations were significantly decreased. Considering that wa-ter-deficit stress is the most important abiotic factor affecting crop production in almost 40% of cultivated areas around the world [19] and that drought events are projected to intensify in the future [20], it is imperative that research efforts should be focused on finding ways to ameliorate the consequences of water-deficit stress.…”

Section: Introductionmentioning

confidence: 99%

Polyamine Metabolism of the Cotton Flower and Its Sub-tending Leaf under Water-Deficit Stress in the Field

Loka¹,

Oosterhuis²,

Mattice³

et al. 2013

AJPS

Self Cite

View full text Add to dashboard Cite

Polyamines, putrescine, spermidine and spermine are low molecular weight polycations implicated in flowering and seed set and plants' responses under adverse environmental conditions. Research in other crops has shown that polyamine metabolism is greatly affected by water-deficit stress, however, no information exists on cotton (Gossypium hirsutum L.). A field study was conducted in 2011 in two contrasting locations (Fayetteville, AR, and Lubbock, TX) in order to investigate the effect of water-deficit stress during flowering on polyamine metabolism of the cotton flower and its subtending leaf. Treatments consisted of control (well watered) and water-stress (irrigation withheld for two weeks at the onset of flowering) in a split plot design. First day white flowers and their subtending leaves were collected at the end of each week of the stress period for determination of polyamine concentrations. Water-deficit stress resulted in significant increases in PUT and SPD levels of pistils and leaves compared to the control. However, pistil and leaf SPM content significantly increased under drought conditions in one location and remained unaltered in the other one. Leaf and pistil polyamine metabolism of cotton appeared to be greatly affected by limited water supply, however further research is needed to elucidate the ways polyamines can be used to increase cotton drought tolerance.

show abstract

“…Recently, Akiyama and Jin (2007) have demonstrated that the OsADC1 gene is regulated in an essentially chilling-specific manner, possibly associated with increased Put accumulation in rice. PAs have also been shown to stimulate fruit set and the initial phase of fruit development in several crops (Iqbal et al 2006b,c, Bibi et al 2010). In the present study, chilling increased Put concentration only in the salt intolerant, whereas Spm concentration in both wheat cultivars when grown under salt stress.…”

mentioning

confidence: 99%

Changes in Hormonal Balance: A Possible Mechanism of Pre‐Sowing Chilling‐Induced Salt Tolerance in Spring Wheat

Iqbal

Ashraf

2010

J Agronomy Crop Science

View full text Add to dashboard Cite

There is a lack of knowledge about factors contributing to the chilling‐induced alleviatory effects on growth of plants under salt stress. Thus, the primary objective of the study was to determine whether chilling‐induced changes in endogenous hormones, ionic partitioning within shoots and roots and/or gaseous exchange characteristics is involved in salt tolerance of two genetically diverses of wheat crops. For this purpose, the seeds of two spring wheat (Triticum aestivum) cultivars, MH‐97 (salt intolerant) and Inqlab‐91 (salt tolerant) were chilled at 3°C for 2 weeks. The chilled, hydroprimed and non‐primed (control) seeds of the two wheat cultivars were sown in both Petri dishes in a growth room and in the field after treatment with 15 dS m−1 NaCl salinity. Chilling was very effective in increasing germination rate and subsequent growth when compared with hydropriming and control under salt stress. Results from field experiments clearly indicated the efficacy of chilling over hydropriming in improving shoot dry biomass and grain yield in either cultivar, particularly under salt stress. This increase in growth and yield was related to increased net photosynthetic rate, greater potential to uptake and accumulate the beneficial mineral elements (K+ and Ca2+) in the roots and reduced uptake and accumulation of toxic mineral element (Na+) in the shoots of both wheat cultivars when grown under salt stress. Salt‐stressed plants of both wheat cultivars raised from chilled seed had greater concentrations of indoleacetic acid, abscisic acid, salicylic acid and spermine when compared with hydropriming and control. Therefore, induction of salt tolerance by pre‐sowing chilling treatment in wheat could be attributed to its beneficial effects on ionic homeostasis and hormonal balance. The results presented are also helpful to understand the chilling‐induced cross adaptation of plants in natural environments. Moreover, efficacy of pre‐sowing chilling treatment over hydropriming suggested its commercial utilization as a low risk priming treatment for better wheat crop production under stressful environments.

show abstract

Exogenous Application of Putrescine Ameliorates the Effect of High Temperature in Gossypium hirsutum L. Flowers and Fruit Development

Cited by 28 publications

References 30 publications

Polyamines in response to abiotic stress tolerance through transgenic approaches

Polyamines in response to abiotic stress tolerance through transgenic approaches

Polyamine Metabolism of the Cotton Flower and Its Sub-tending Leaf under Water-Deficit Stress in the Field

Changes in Hormonal Balance: A Possible Mechanism of Pre‐Sowing Chilling‐Induced Salt Tolerance in Spring Wheat

Contact Info

Product

Resources

About