Regulation of seed dormancy by the maternal environment is instrumental for maximizing plant fitness in Polygonum aviculare

Farnocchia, Rocío B Fernández; Benech‐Arnold, Roberto L.; Batlla, Diego

doi:10.1093/jxb/erz269

Cited by 13 publications

(11 citation statements)

References 41 publications

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“…reproduction and seed dispersal), and not only relative to environment, but also to agricultural practices and crop phenology, defining the fitness of a weed population in a certain environment. 25 From this we can argue that weed behavior in a changing agricultural scenario can be inferred from an analysis of the dormancy attributes, at least better than from other demographic features. More precisely, dormancy attributes and their plasticity cannot predict success by themselves, but they can predict failure and the recruitment of new species in the weed community.…”

Section: Can We Consider Dormancy Attributes To Derive Lines Of Actiomentioning

confidence: 97%

“…This plasticity allows P. aviculare to behave as a weed of either winter or summer crops. Recent results showed that the requirement of low temperatures for dormancy alleviation in P. aviculare also depends on the maternal environment perceived by the seeds during their development and maturation on the mother plant, further increasing the plasticity in the requirement of low temperatures for decreasing the dormancy level in the seed‐bank population …”

Section: Seed Dormancy As a Trait For Adjustment: Stories Of Evolutiomentioning

confidence: 99%

“…Other traits not related to weed establishment may be as complex as dormancy; however, only establishment timing is of decisive importance since it places temporally all the other stages (i.e. reproduction and seed dispersal), and not only relative to environment, but also to agricultural practices and crop phenology, defining the fitness of a weed population in a certain environment . From this we can argue that weed behavior in a changing agricultural scenario can be inferred from an analysis of the dormancy attributes, at least better than from other demographic features.…”

Section: Can We Consider Dormancy Attributes To Derive Lines Of Actiomentioning

confidence: 99%

“…Recent results showed that the requirement of low temperatures for dormancy alleviation in P. aviculare also depends on the maternal environment perceived by the seeds during their development and maturation on the mother plant, further increasing the plasticity in the requirement of low temperatures for decreasing the dormancy level in the seed-bank population. 25 In addition, genetic variability in the case of P. aviculare does allow for adjustment to a change from conventional tillage to no-till. It was demonstrated that although most seeds in the population need their dormancy to be terminated by a light stimulus after attaining low dormancy, a small fraction of ∼ 15% can germinate in the dark if dormancy is sufficiently low.…”

Section: Seed Dormancy As a Trait For Adjustment: Stories Of Evolutiomentioning

confidence: 99%

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Dormancy, a critical trait for weed success in crop production systems

Batlla

Ghersa

Benech‐Arnold

2020

Pest Management Science

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Agricultural practices exert selective forces on weed populations. As these practices change over time, weed adaptive traits also evolve, allowing weeds to persist in the new environment. However, only weeds having individuals showing the trait with adaptive significance will be able to cope with these changes, thus allowing a sub‐population to be selected for persistence. In addition, changes in agricultural practices can select new weed species showing functional traits with characteristics adaptive to the modified system. Seed dormancy has long been recognized as a trait with enormous adaptive value to adjust weed biology to cropping systems. In this paper, we illustrate with examples of success and failure, the value of seed dormancy as a functional trait to cope with long‐term changes in crop production systems. We show that successful outcomes are mostly related to the existence of sufficient variability for the functioning of physiological mechanisms that control dormancy characteristics as influenced by the agricultural environment. Presented examples illustrate how knowledge about the relationship that exists between agricultural practices and their selective pressure on seed dormancy can be instrumental in predicting changes in weed biotype dormancy characteristics or foreseeing the appearance of new weed species in future agricultural scenarios. © 2019 Society of Chemical Industry

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Section: Can We Consider Dormancy Attributes To Derive Lines Of Actiomentioning

confidence: 97%

Section: Seed Dormancy As a Trait For Adjustment: Stories Of Evolutiomentioning

confidence: 99%

Section: Can We Consider Dormancy Attributes To Derive Lines Of Actiomentioning

confidence: 99%

Section: Seed Dormancy As a Trait For Adjustment: Stories Of Evolutiomentioning

confidence: 99%

See 2 more Smart Citations

Dormancy, a critical trait for weed success in crop production systems

Batlla

Ghersa

Benech‐Arnold

2020

Pest Management Science

Self Cite

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“…2011; Fernández Farnocchia et al . 2019); and (ii) maternal genetic effects, where phenotypic differences in the offspring are due to the maternal parent´s phenotype or genotype (Roach & Wulff 1987; Pace et al . 2015; Singh et al .…”

Section: Introductionmentioning

confidence: 99%

Maternal control of early life history traits affects overwinter survival and seedling phenotypes in sunflower (Helianthus annuus L.)

et al. 2021

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When cultivated and wild plants hybridize, hybrids often show intermediate phenotypic traits relative to their parents, which makes them unfit in natural environments. However, maternal genetic effects may affect the outcome of hybridization by controlling expression of the earliest life history traits. Here, using wild, cultivated and reciprocal crop–wild sunflower (Helianthus annuus L.) hybrids, we evaluated the maternal effects on emergence timing and seedling establishment in the field and on seedling traits under controlled conditions. In the field, we evaluated reciprocal crop–wild hybrids between two wild populations with contrasting dormancy (the high dormant BAR and the low dormant DIA) and one cultivar (CROP) with low dormancy. Under controlled conditions, we evaluated reciprocal crop–wild hybrids between two wild populations (BAR and RCU) and one CROP under three contrasting temperature treatments. In the field, BAR overwintered as dormant seeds whereas DIA and CROP showed high autumn emergence (~50% of planted seeds), resulting in differential overwinter survival and seedling establishment in the spring. Reciprocal crop–wild hybrids resembled their female parents in emergence timing and success of seedling establishment. Under controlled conditions, we observed large maternal effects on most seedling traits across temperatures. Cotyledon size explained most of the variation in seedling traits, suggesting that the maternal effects on seed size have cascading effects on seedling traits. Maternal effects on early life history traits affect early plant survival and phenotypic variation of crop–wild hybrids, thus, they should be addressed in hybridization studies, especially those involving highly divergent parents, such as cultivated species and their wild ancestors.

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Dormancy attributes in sunflower achenes (Helianthus annuus L.): II. Sowing date effects

et al. 2021

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Sunflower (Helianthus annuus L.) seed industry needs nondormant seeds (i.e., seeds with the capacity to germinate in a wide range of environmental conditions) for processing and packaging. Thus, the presence of persistent seed dormancy is an undesirable trait. Dormancy level depends on the genotype and on the maternal environment. The aim of the present work was to study, in a wide range of sunflower genotypes, the effect of variations in sowing date on achene dormancy level and to investigate if these changes are related to variations in (a) embryo or coat‐imposed dormancy, (b) dormancy expression at high or low incubation temperatures, and (c) embryo sensitivity to abscisic acid (ABA). Two experiments were performed. In Experiment I, 20 sunflower genotypes were sown in two contrasting planting dates during three consecutive years, whereas in Experiment II, 1579 genotype was sown in five dates along a 5‐mo period. At harvest and during postharvest storage, fruit structures were incubated at different incubation temperatures in water and ABA. Descriptive multivariate analyses showed that late sowings provoked an enhancement of achene germination at harvest and a faster dormancy release during postharvest storage in all genotypes. However, the magnitude of the response, the temperature at which dormancy was expressed, and the tissue responsible for achene dormancy varied among genotypes. The mechanism that partially explains this dormancy alleviation appears to be the sensitivity of embryo germination to ABA inhibition. Result suggest that sowing date can be managed to obtain less‐dormant sunflower seed lots without significant yield loss.

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Regulation of seed dormancy by the maternal environment is instrumental for maximizing plant fitness in Polygonum aviculare

Abstract: The maternal environment during the reproductive phase in Polygonum aviculare regulates the dormancy level of seeds so that those dispersed at different times all germinate within an optimal period. Photoperiod plays an important role in this regulation.

Cited by 13 publications

References 41 publications

Dormancy, a critical trait for weed success in crop production systems

Dormancy, a critical trait for weed success in crop production systems

Maternal control of early life history traits affects overwinter survival and seedling phenotypes in sunflower (Helianthus annuus L.)

Dormancy attributes in sunflower achenes (Helianthus annuus L.): II. Sowing date effects

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