Effect of polyamines on the grain filling of wheat under drought stress

Liu, Yang; Liang, Haiyan; Lv, Xiaokang; Liu, Didi; Wen, Xiaoxia; Liao, Yuncheng

doi:10.1016/j.plaphy.2016.01.003

Cited by 105 publications

(71 citation statements)

References 44 publications

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“…Interestingly, cellular PA levels have been found to influence the biosynthetic pathways of ABA. The application of Spd, Spm, and Put remarkably elevated the ABA content in the wheat grains under drought stress [ 18 ]. Exogenous Put promoted the ABA synthesis and enhanced drought tolerance of Lotus tenuis plants [ 19 ].…”

Section: Introductionmentioning

confidence: 99%

Rhizobacterial Strain Bacillus megaterium BOFC15 Induces Cellular Polyamine Changes that Improve Plant Growth and Drought Resistance

Zhou

Zhu

et al. 2016

IJMS

174

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Plant-growth-promoting rhizobacteria can improve plant growth, development, and stress adaptation. However, the underlying mechanisms are still largely unclear. We investigated the effects of Bacillus megaterium BOFC15 on Arabidopsis plants. BOFC15 produced and secreted spermidine (Spd), a type of polyamine (PA) that plays an important role in plant growth. Moreover, BOFC15 induced changes in the cellular PAs of plants that promoted an increase of free Spd and spermine levels. However, these effects were remarkably abolished by the addition of dicyclohexylamine (DCHA), a Spd biosynthetic inhibitor. Additionally, the inoculation with BOFC15 remarkably increased plant biomass, improved root system architecture, and augmented photosynthetic capacity. Inoculated plants also displayed stronger ability to tolerate drought stress than non-inoculated (control) plants. Abscisic acid (ABA) content was notably higher in the inoculated plants than in the control plants under drought stress and polyethylene glycol (PEG)-induced stress conditions. However, the BOFC15-induced ABA synthesis was markedly inhibited by DCHA. Thus, microbial Spd participated in the modulation of the ABA levels. The Spd-producing BOFC15 improved plant drought tolerance, which was associated with altered cellular ABA levels and activated adaptive responses.

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Section: Introductionmentioning

confidence: 99%

Rhizobacterial Strain Bacillus megaterium BOFC15 Induces Cellular Polyamine Changes that Improve Plant Growth and Drought Resistance

Zhou

Zhu

et al. 2016

IJMS

174

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“…The grain CTK concentrations were significantly and positively correlated with the grain-filling rate and maximum grain mass (Yang et al ., 2002; Yang et al ., 2008; Zhang et al ., 2009). In rice ( Oryza sativa L.), wheat, maize and barley ( Hordeum vulgare L.), a higher CTK concentration was generally observed in the endosperm of the grains and involved in cell division during the early phase of grain development which, in combination with functions of auxin, are positively and significantly correlated with cell division, sink strength and the grain-filling rate (Dietrich et al ., 1995; Yang et al ., 2000; Zhang et al ., 2016; Xu et al ., 2007; Zhang et al ., 2009a; Liu et al ., 2016; Yang et al ., 2016), due to the enhanced sink strength (Rijavec et al ., 2009; Yu et al ., 2015).…”

Section: Discussionmentioning

confidence: 99%

“…Plant hormones and associated hormonal crosstalk are significantly related to the modification of source/sink relationships, a stronger sink capacity, grain filling rate (Yang et al ., 2001; Yang and Zhang, 2006; Liu et al ., 2016), membrane stability, foliar senescence and photosynthetic efficiency, possibly by acting as signalings to scavenge ROS or prevent ROS formation (Yang et al ., 2002; Afzal et al ., 2005; Biswas and Mondal, 1986).…”

Section: Discussionmentioning

confidence: 99%

Source-Sink Modifications Affect Leaf Senescence and Grain Mass in Wheat

Zhang

et al. 2019

Preprint

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1 A field experiment was performed in wheat to investigate the responses of flag leaf and grain to 2 sink/source manipulations. The results showed that half-degraining delayed but defoliation (only 3 flag leaf left) enhanced the leaf senescence. Sink/source manipulations influenced the content of 4 1 1 Chloroplast Structure 1 2 At 16 DAM, visual observation did not find difference in senescing flag leaf between three 1 3 Fv/Fm 0.0 0.2 0.4 0.6 0.8

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“…When treated with spermidine and spermine, the endogenous ethylene content decreased and led to poor the grain filling and lower grain weight ( Liu et al, 2013 ). Furthermore, under drought conditions, spermidine and spermine significantly increased zeatin, zeatin riboside and ABA content, decreased ethylene content in grains, and improved grain-filling rate in wheat ( Liu et al, 2016 ). Furthermore, the balance of ethylene and ABA plays a pivotal role in grain-filling rate ( Yang et al, 2004 ).…”

Section: Ethylene and Grain Fillingmentioning

confidence: 99%

“…Taken together, the grain filling is a complicated process and may be regulated by ethylene and other hormones through interactions ( Zhao et al, 2007 ; Liu et al, 2013 , 2016 ). Roles of the hormones from exogenous application studies and from the endogenous determination studies have their own limitations and advantages.…”

Section: Ethylene and Grain Fillingmentioning

confidence: 99%

Diverse Roles of Ethylene in Regulating Agronomic Traits in Rice

Yin

et al. 2017

Front. Plant Sci.

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Gaseous hormone ethylene has diverse effects in various plant processes. These processes include seed germination, plant growth, senescence, fruit ripening, biotic and abiotic stresses responses, and many other aspects. The biosynthesis and signaling of ethylene have been extensively studied in model Arabidopsis in the past two decades. However, knowledge about the ethylene signaling mechanism in crops and roles of ethylene in regulation of crop agronomic traits are still limited. Our recent findings demonstrate that rice possesses both conserved and diverged mechanism for ethylene signaling compared with Arabidopsis. Here, we mainly focused on the recent advances in ethylene regulation of important agronomic traits. Of special emphasis is its impact on rice growth, flowering, grain filling, and grain size control. Similarly, the influence of ethylene on other relevant crops will be compared. Additionally, interactions of ethylene with other hormones will also be discussed in terms of crop growth and development. Increasing insights into the roles and mechanisms of ethylene in regulating agronomic traits will contribute to improvement of crop production through precise manipulation of ethylene actions in crops.

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Effect of polyamines on the grain filling of wheat under drought stress

Cited by 105 publications

References 44 publications

Rhizobacterial Strain Bacillus megaterium BOFC15 Induces Cellular Polyamine Changes that Improve Plant Growth and Drought Resistance

Rhizobacterial Strain Bacillus megaterium BOFC15 Induces Cellular Polyamine Changes that Improve Plant Growth and Drought Resistance

Source-Sink Modifications Affect Leaf Senescence and Grain Mass in Wheat

Diverse Roles of Ethylene in Regulating Agronomic Traits in Rice

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