Effects of parental light environment on growth and morphological responses of clonal offspring

Dong, Bi‐Cheng; Meng, Jianghong; Yu, Fei‐Hai

doi:10.1111/plb.13001

Cited by 18 publications

(21 citation statements)

References 51 publications

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“…Griseb. (Dong et al 2019) and T. repens (Rendina González et al 2016González et al , 2018. Furthermore, it was noted that if transgenerational effects are a significant component of the clonal lifestyle, it is possible that the growth and behaviour of an emerging clonal plant might be significantly changed by environments that had been experienced by the parental plant (Huber et al 2014).…”

Section: Growth Of the Genetmentioning

confidence: 99%

Epigenetic memory and growth responses of the clonal plant

Zhang

Tie

et al. 2021

Funct. Plant Biol.

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The responses of plants to recurrent stress may differ from their responses to a single stress event. In this study, we investigated whether clonal plants can remember past environments. Parental ramets of Glechoma longituba (Nakai) Kuprian were exposed to UV-B stress treatments either once or repeatedly (20 and 40 repetitions). Differences in DNA methylation levels and growth parameters among parents, offspring ramets and genets were analysed. Our results showed that UV-B stress reduced the DNA methylation level of parental ramets, and the reduction was enhanced by increasing the number of UV-B treatments. The epigenetic variation exhibited by recurrently stressed parents was maintained for a long time, but that of singly stressed parents was only short-term. Moreover, clonal plants responded to different UV-B stress treatments with different growth strategies. The one-time stress was a eustress that increased genet biomass by increasing offspring leaf allocation and defensive allocation in comparison to the older offspring. In contrast, recurring stress was a distress that reduced genet biomass, increased the biomass of storage stolons, and allocated more defensive substances to the younger ramets. This study demonstrated that the growth of offspring and genets was clearly affected by parental experience, and parental epigenetic memory and the transgenerational effect may play important roles in this effect.

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Section: Growth Of the Genetmentioning

confidence: 99%

Epigenetic memory and growth responses of the clonal plant

Zhang

Tie

et al. 2021

Funct. Plant Biol.

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“…Such memory on past conditions can be enabled by various mechanisms including hormonal signaling or epigenetic changes for example in DNA methylation. Interestingly, clonal plants appear to have greater ability than non-clonal plants to remember past environmental interactions via epigenetic mechanisms (Xiao et al, 2006;Latzel and Klimešová, 2010;Louapre et al, 2012;Douhovnikoff and Dodd, 2015;Dong et al, 2019). This is usually explained by the fact that epigenetic change is easier to be maintained among clonal generations (ramets) than sexual generations due to the lack of meiosis, resetting most of the environmentally induced epigenetic variation (Paszkowski and Grossniklaus, 2011), during clonal growth.…”

Section: Introductionmentioning

confidence: 99%

Ultraviolet B Radiation Triggers DNA Methylation Change and Affects Foraging Behavior of the Clonal Plant Glechoma longituba

et al. 2021

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Clonal plants in heterogeneous environments can benefit from their habitat selection behavior, which enables them to utilize patchily distributed resources efficiently. It has been shown that such behavior can be strongly influenced by their memories on past environmental interactions. Epigenetic variation such as DNA methylation was proposed to be one of the mechanisms involved in the memory. Here, we explored whether the experience with Ultraviolet B (UV-B) radiation triggers epigenetic memory and affects clonal plants’ foraging behavior in an UV-B heterogeneous environment. Parental ramets of Glechoma longituba were exposed to UV-B radiation for 15 days or not (controls), and their offspring ramets were allowed to choose light environment enriched with UV-B or not (the species is monopodial and can only choose one environment). Sizes and epigenetic profiles (based on methylation-sensitive amplification polymorphism analysis) of parental and offspring plants from different environments were also analyzed. Parental ramets that have been exposed to UV-B radiation were smaller than ramets from control environment and produced less and smaller offspring ramets. Offspring ramets were placed more often into the control light environment (88.46% ramets) than to the UV-B light environment (11.54% ramets) when parental ramets were exposed to UV-B radiation, which is a manifestation of “escape strategy.” Offspring of control parental ramets show similar preference to the two light environments. Parental ramets exposed to UV-B had lower levels of overall DNA methylation and had different epigenetic profiles than control parental ramets. The methylation of UV-B-stressed parental ramets was maintained among their offspring ramets, although the epigenetic differentiation was reduced after several asexual generations. The parental experience with the UV-B radiation strongly influenced foraging behavior. The memory on the previous environmental interaction enables clonal plants to better interact with a heterogeneous environment and the memory is at least partly based on heritable epigenetic variation.

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“…Furthermore, parental shading effects of Alternanthera philoxeroides could be transmitted via clonal generation and decreased growth and modified morphology of offspring. These offspring responses were also influenced by DNA methylation levels of parents (Dong et al 2019). Moreover, shaded parents of P. persicaria produced offspring with increased fitness in shade as well as a greater competitive impact on plant neighbours (Baker et al 2019).…”

Section: Role Of Parental Epigenetic Memory In the Habitat Selection ...mentioning

confidence: 97%

“…In addition to the present environment, the growth behaviour of plants is also regulated by the environment of their parents. The 'maternal effects' of the parental environment can persist across offspring generations and influence the phenotype and fitness of progeny (Galloway 2005; Louâpre et al 2012;González Besteiro and Ulm 2013;González et al 2017;Dong et al 2018Dong et al , 2019. Because of the asexual reproduction of clonal plants, they have a greater ability than nonclonal plants to 'remember' the environmental events of their parent (Zhang et al 2021).…”

Section: Introductionmentioning

confidence: 99%

“…Therefore, maternal effects induced by the parental environment have been reported for several clonal plants in recent years. In these studies, the offspring ramets of stressed parents displayed adapted growth or increased fitness in the same environment as their parent (Herman and Sultan 2016;González et al 2018;Baker et al 2019;Dong et al 2019). In the study of the environmental adaptability of clonal plants, the environment of the parent is a nonnegligible factor that plays an important role in regulating the growth behaviour of clonal plants.…”

Section: Introductionmentioning

confidence: 99%

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Parental UV-B radiation regulates the habitat selection of clonal

et al. 2022

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Habitat selection behaviour is an effective strategy adopted by clonal plants in heterogeneous understorey light environments, and it is likely regulated by the parental environment's ultraviolet-B radiation levels (UV-B) due to the photomorphogenesis of UV-B and maternal effects. Here, parental ramets of Duchesnea indica were treated with two UV-B radiation levels [high (UV5 group) and low (UV10 group)], newborn offspring were grown under a heterogeneous light environment (ambient light vs shade habitat), and the growth and DNA methylation variations of parents and offspring were analysed. The results showed that parental UV-B affected not only the growth of the parent but also the offspring. The offspring of different UV-B-radiated parents showed different performances. Although these offspring all displayed a tendency to escape from light environments, such as entering shade habitats earlier, and allocating more biomass under shade (33.06% of control, 42.28% of UV5 and 72.73% of UV10), these were particularly obvious in offspring of the high UV-B parent. Improvements in epigenetic diversity (4.77 of control vs 4.83 of UV10) and total DNA methylation levels (25.94% of control vs 27.15% of UV10) and the inhibition of shade avoidance syndrome (denser growth with shorter stolons and internodes) were only observed in offspring of high UV-B parents. This difference was related to the eustress and stress effects of low and high UV-B, respectively. Overall, the behaviour of D. indica under heterogeneous light conditions was regulated by the parental UV-B exposure. Moreover, certain performance improvements helped offspring pre-regulate growth to cope with future environments and were probably associated with the effects of maternal DNA methylation variations in UV-B-radiated parents.

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Effects of parental light environment on growth and morphological responses of clonal offspring

Cited by 18 publications

References 51 publications

Epigenetic memory and growth responses of the clonal plant

Epigenetic memory and growth responses of the clonal plant

Ultraviolet B Radiation Triggers DNA Methylation Change and Affects Foraging Behavior of the Clonal Plant Glechoma longituba

Parental UV-B radiation regulates the habitat selection of clonal

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