In Silico Analysis of the Genes Encoding Proteins that Are Involved in the Biosynthesis of the RMS/MAX/D Pathway Revealed New Roles of Strigolactones in Plants

Marzec, Marek; Muszyńska, Aleksandra

doi:10.3390/ijms16046757

Cited by 56 publications

(32 citation statements)

References 93 publications

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“…Moreover, there are indications that at some stages of plant development SLs may act together with gibberellic acid (GA) (refs in. Marzec ) and that in rice and Arabidopsis the SL biosynthetic genes are negatively regulated by GAs (Marzec and Muszynska ).…”

Section: Strigolactones the New Class Of Plant Hormones With Diversementioning

confidence: 99%

Strigolactone‐nitric oxide interplay in plants: The story has just begun

Kolbert

2018

Physiologia Plantarum

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Both strigolactones (SLs) and nitric oxide (NO) are regulatory signals with diverse roles during plant development and stress responses. This review aims to discuss the so far available data regarding SLs-NO interplay in plant systems. The majority of the few articles dealing with SL-NO interplay focuses on the root system and it seems that NO can be an upstream negative regulator of SL biosynthesis or an upstream positive regulator of SL signaling depending on the nutrient supply. From the so far published results it is clear that NO modifies the activity of target proteins involved in SL biosynthesis or signaling which may be a physiologically relevant interaction. Therefore, in silico analysis of NO-dependent posttranslational modifications in SL-related proteins was performed using computational prediction tools and putative NO-target proteins were specified. The picture is presumably more complicated, since also SL is able to modify NO levels. As a confirmation, author detected NO levels in different organs of max1-1 and max2-1 Arabidopsis and compared to the wild-type these mutants showed enhanced NO levels in their root tips indicating the negative effect of endogenous SLs on NO metabolism. Exogenous SL analogue-triggered NO production seems to contradict the results of the genetic study, which is an inconsistency should be taken into consideration in the future. In the coming years, the link between SL and NO signaling in further physiological processes should be examined and the possibilities of NO-dependent posttranslational modifications of SL biosynthetic and signaling proteins should be looked more closely.

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Section: Strigolactones the New Class Of Plant Hormones With Diversementioning

confidence: 99%

Strigolactone‐nitric oxide interplay in plants: The story has just begun

Kolbert

2018

Physiologia Plantarum

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“…A hormone model of primary root growth in which the wall extensibility is determined by the concentration of a wall enzyme (unspecified by the authors), whose production and degradation are assumed to be controlled by auxin and cytokinin, was proposed by Chavarria-Krauser et al (2005). Additionally, the role of new class of plant hormones, strigolactones (SLs), was postulated in this process (de Saint Germain et al 2013;Marzec and Muszynska 2015). More recently, Pietruszka (2012) formulated a biosynthesis/inactivation model for enzymatic wall loosening factors or non-enzymatically mediated cell evolution based on the Lockhart (1965) type of equation.…”

Section: Introductionmentioning

confidence: 99%

Effective diffusion rates and cross-correlation analysis of “acid growth” data

Pietruszka

Haduch-Sendecka

2016

Acta Physiol Plant

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We investigated the growth-temperature relationship in plants using a quantitative perspective of a recently derived growth functional. We showed that auxininduced growth is achieved by the diffusion rate, which is almost constant or slowly ascending in temperature, while the diffusion rate of fusicoccin (FC)-induced growth increases monotonically with temperature for the entire temperature range (0-45)°C, although for some concentrations of indole-3-acetic acid (IAA), ''super-diffusion'' takes place for unperturbed growth. We also calculated the cross-correlations and the derivative of cross-correlations for elongation growth (rate) and pH as a function of time delay (lag) parameterised by temperature for artificial pond water (APW) control conditions (endogenous growth) and exogenous IAA and FC that were introduced into the medium. Dimensionality analysis revealed that discontinuities in the cross-correlation derivative corresponded to H ? ion kinetics, which attained definite numerical values that were approximately proportional to the (logarithm of) proton secretion rates (or relative buffer acidification). Furthermore, three types of experiments were compared: for abraded coleoptiles, coleoptile segments and intact growing seedlings. From the cross-correlation analysis, it was found that the timing of IAA and FC-induced proton secretion and growth matched well. Unambiguous results concerning the canvas constituting acid growth hypothesis were obtained by cross-and auto-correlation analysis: (1) for abraded coleoptiles, because of the lowering of the cuticle potential barrier, auxin-induced cell wall pH decreased simultaneously with the change in growth rate; no advancement or retardation of pH (proton efflux rate) or growth rate took place, (2) exogenous protons were able to substitute for auxin thus causing wall loosening and growth, (3) although the underlying molecular mechanisms differ vastly, a potent stimulator of proton secretion, the fungal toxin FC, promoted growth that was similar to auxin, although of an elevated intensity; as for auxin-no advancement or retardation took place.

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“…Both SLs and ABA biosynthetically originate from carotenoids [202]. Reduced SL levels in ABA-biosynthesis mutants have been observed in tomato plants [141,203], while SL-deficient tomato mutants exhibited a reduction in the levels of ABA [204]. This suggests that ABA and SL interact with each other during biosynthesis.…”

Section: Sls and Kars Crosstalk With Other Phytohormones Under Abiotimentioning

confidence: 98%

Comparing and Contrasting the Multiple Roles of Butenolide Plant Growth Regulators: Strigolactones and Karrikins in Plant Development and Adaptation to Abiotic Stresses

Tao

Lian

Wang

2019

IJMS

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Strigolactones (SLs) and karrikins (KARs) are both butenolide molecules that play essential roles in plant growth and development. SLs are phytohormones, with SLs having known functions within the plant they are produced in, while KARs are found in smoke emitted from burning plant matter and affect seeds and seedlings in areas of wildfire. It has been suggested that SL and KAR signaling may share similar mechanisms. The α/β hydrolases DWARF14 (D14) and KARRIKIN INSENSITIVE 2 (KAI2), which act as receptors of SL and KAR, respectively, both interact with the F-box protein MORE AXILLARY GROWTH 2 (MAX2) in order to target SUPPRESSOR OF MAX2 1 (SMAX1)-LIKE/D53 family members for degradation via the 26S proteasome. Recent reports suggest that SLs and/or KARs are also involved in regulating plant responses and adaptation to various abiotic stresses, particularly nutrient deficiency, drought, salinity, and chilling. There is also crosstalk with other hormone signaling pathways, including auxin, gibberellic acid (GA), abscisic acid (ABA), cytokinin (CK), and ethylene (ET), under normal and abiotic stress conditions. This review briefly covers the biosynthetic and signaling pathways of SLs and KARs, compares their functions in plant growth and development, and reviews the effects of any crosstalk between SLs or KARs and other plant hormones at various stages of plant development. We also focus on the distinct responses, adaptations, and regulatory mechanisms related to SLs and/or KARs in response to various abiotic stresses. The review closes with discussion on ways to gain additional insights into the SL and KAR pathways and the crosstalk between these related phytohormones.factors through interactions between the phytohormone regulatory networks via the perception and signal transduction originating at various receptors [20][21][22][23].Strigolactones (SLs) were originally isolated from root exudates of cotton and as seed germination stimulants from plants in the Orobanchaceae family that parasitize plant roots (Striga, Phelipanche, and Orobanche spp.) [24][25][26]. SLs normally control seed germination and seedling development [27], shoot branching [28-32], root architecture [33], and leaf senescence [34]. SLs also promote beneficial symbiotic relationships between host plants and mycorrhizal fungi [35,36]. The biosynthesis and signaling of SLs are regulated by various abiotic stress factors [37][38][39][40], including the recently reported SL involvement in responding to nutrient deprivation, drought, chilling and salinity [38,[40][41][42][43][44][45][46][47][48][49][50]. Such studies provide new insights into the novel roles SL signaling plays in the regulation of plant adaptation to adverse environmental conditions [51][52][53][54].Karrikins (KARs) are found in smoke released from the heating or combustion of plant material, after which they can stimulate the germination of dormant seeds [55][56][57][58]. KARs are also involved in the inhibition of hypocotyl elongation and in the promotion of cotyledon expansion and...

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In Silico Analysis of the Genes Encoding Proteins that Are Involved in the Biosynthesis of the RMS/MAX/D Pathway Revealed New Roles of Strigolactones in Plants

Cited by 56 publications

References 93 publications

Strigolactone‐nitric oxide interplay in plants: The story has just begun

Strigolactone‐nitric oxide interplay in plants: The story has just begun

Effective diffusion rates and cross-correlation analysis of “acid growth” data

Comparing and Contrasting the Multiple Roles of Butenolide Plant Growth Regulators: Strigolactones and Karrikins in Plant Development and Adaptation to Abiotic Stresses

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