Regulation of abscisic acid metabolism in relation to the dormancy and germination of cereal grains

Fidler, Justyna; Zdunek‐Zastocka, Edyta; Bielawski, W

doi:10.5586/asbp.2015.004

Cited by 13 publications

(9 citation statements)

References 74 publications

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“…Seed development in cereals is characterized by two peaks of ABA accumulation that occur during the mid- and late-phases of seed maturation. The accumulation of ABA in the latter peak (which is mainly synthesized in the zygotic tissues) plays a key role in the induction and maintenance of seed dormancy [ 95 ]. Endogenous production of ABA in barley is placed in the endosperm, and during seed maturation it is the embryo that is responsible for activation of genes responsible for ABA biosynthesis [ 96 ].…”

Section: Role Of Aba In Abiotic Stressesmentioning

confidence: 99%

Abscisic Acid—Enemy or Savior in the Response of Cereals to Abiotic and Biotic Stresses?

Gietler

Fidler

Labudda

et al. 2020

IJMS

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Abscisic acid (ABA) is well-known phytohormone involved in the control of plant natural developmental processes, as well as the stress response. Although in wheat (Triticum aestivum L.) and barley (Hordeum vulgare L.) its role in mechanism of the tolerance to most common abiotic stresses, such as drought, salinity, or extreme temperatures seems to be fairly well recognized, not many authors considered that changes in ABA content may also influence the sensitivity of cereals to adverse environmental factors, e.g., by accelerating senescence, lowering pollen fertility, and inducing seed dormancy. Moreover, recently, ABA has also been regarded as an element of the biotic stress response; however, its role is still highly unclear. Many studies connect the susceptibility to various diseases with increased concentration of this phytohormone. Therefore, in contrast to the original assumptions, the role of ABA in response to biotic and abiotic stress does not always have to be associated with survival mechanisms; on the contrary, in some cases, abscisic acid can be one of the factors that increases the susceptibility of plants to adverse biotic and abiotic environmental factors.

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Section: Role Of Aba In Abiotic Stressesmentioning

confidence: 99%

Abscisic Acid—Enemy or Savior in the Response of Cereals to Abiotic and Biotic Stresses?

Gietler

Fidler

Labudda

et al. 2020

IJMS

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“…Abscisic acid is known to control dormancy in caryopses of several cereals. The inability of caryopses to complete germination is associated with the ABA level being too high (Fidler et al 2015 ; Rodríguez et al 2015 ). Consequently, the dormant A. fatua caryopses were not able to complete germination (Fig.…”

Section: Discussionmentioning

confidence: 99%

Avena fatua caryopsis dormancy release is associated with changes in KAR1 and ABA sensitivity as well as with ABA reduction in coleorhiza and radicle

Kępczyński

Wójcik

Dziurka

2021

Planta

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Main conclusion The dormancy release in Avena fatua caryopses was associated with a reduction in the ABA content in embryos, coleorhiza and radicle. The coleorhiza proved more sensitive to KAR1 and less sensitive to ABA than the radicle. The inability of dormant caryopses and ABA-treated non-dormant caryopses to complete germination is related to inhibition and delayed of cell-cycle activation, respectively. Abstract As freshly harvested Avena fatua caryopses are dormant at 20 °C, they cannot complete germination; the radicle is not able to emerge. Both karrikin 1 (KAR1) and dry after-ripening release dormancy, enabling the emergence of, first, the coleorhiza and later the radicle. The after-ripening removes caryopse sensitivity to KAR1 and decreases the sensitivity to abscisic acid (ABA). The coleorhiza was found to be more sensitive to KAR1, and less sensitive to ABA, than radicles. Effects of KAR1 and after-ripening were associated with a reduction of the embryo’s ABA content during caryopsis germination. KAR1 was found to decrease the ABA content in the coleorhiza and radicles. Germination of after-ripened caryopses was associated with the progress of cell-cycle activation before coleorhiza emergence. Inhibition of the germination completion due to dormancy or treating the non-dormant caryopses with ABA was associated with a total and partial inhibition of cell-cycle activation, respectively.

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“…The practical aspect of the research includes the possibility of acceleration of seed germination when the sowing is late or germination uneven [30,46]. In this case the smoke-saturated water would be used instead of troublesome and dangerous smoke application [7,16].…”

Section: Discussionmentioning

confidence: 99%

“…It can be surmised that within such a seed lot, some senescing seeds or dormant seeds were affected [30]. One of the reasons for dormancy is the hardening of the testa, leading to impermeability to water and oxygen.…”

Section: Seed Germination and Seedling Development In The Soilmentioning

confidence: 99%

Swailing affects seed germination of plants of European bio-and agricenosis in a different way

Bączek-Kwinta

2017

Open Life Sciences

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Swailing as a part of agricultural practice is an illegal habit in many European countries. The indirect effect of swailing is the emission of volatiles (SGV), hence the aim of the study was to identify their impact to seeds of different species occurring or grown Europe. It was carried out on seeds of 29 species of 10 botanical families within the angiosperms. The response to SGV was more or less differentiated within a family, and even within the species, e.g. in the case of tomato. The stimulation of germination and/or increased seedling vigour was established in celery, green- and red-leafed basil, white and red cabbage, white clover and wild thyme. The same effect was noticed for the seeds of stratified broadleaf plantain and the positively photoblastic seeds of German chamomile germinated in darkness. The inhibition of seed germination and/ or reduced seedling vigour was demonstrated in case of caraway, dill and forget-me-not. Similar results were obtained in the experiments carried out in vitro and in the soil, hence it can be assumed that the indirect impact of SGV on plant habitat composition is likely. The interaction of SGV compounds with seed testa and seed phytohormones is discussed.

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Regulation of abscisic acid metabolism in relation to the dormancy and germination of cereal grains

Cited by 13 publications

References 74 publications

Abscisic Acid—Enemy or Savior in the Response of Cereals to Abiotic and Biotic Stresses?

Abscisic Acid—Enemy or Savior in the Response of Cereals to Abiotic and Biotic Stresses?

Avena fatua caryopsis dormancy release is associated with changes in KAR1 and ABA sensitivity as well as with ABA reduction in coleorhiza and radicle

Swailing affects seed germination of plants of European bio-and agricenosis in a different way

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