Mutualism breakdown in breadfruit domestication

Xing, Xiaoke; Koch, Alexander; Jones, Andrew Maxwell Phineas; Ragone, Diane; Murch, Susan J.; Hart, Miranda M.

doi:10.1098/rspb.2011.1550

Cited by 45 publications

(40 citation statements)

References 62 publications

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“…Indeed, for soybean it has been shown that older cultivars rely more on nitrogen-fixing rhizobia than newer cultivars (Kiers et al 2007). Likewise, some wheat varieties appear to have become less dependent on AMF through time (Sawers et al 2008), and the same has been observed in breadfruit (Xing et al 2012). However, a recent meta-analysis across studies published over a period of 20 years concluded the opposite; the authors found that responsiveness to AMF has, in fact, increased with year since release (Lehmann et al 2012).…”

Section: Breeding Effects On Symbiotic Interactionsmentioning

confidence: 87%

Frontiers and perspectives on research strategies in grassland technology

Schellberg

Verbruggen

2014

Crop Pasture Sci.

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Grassland scientists and farmers are increasingly faced with emerging new technologies and information systems that have been primarily developed in engineering sciences, in particular, precision agriculture, remote sensing, geographic information and biotechnology. Judgment upon whether the implementation of any of these technologies may be beneficial in economic and ecological respects is challenging, especially to those who have to make on-farm decisions. New technologies have been applied on grassland only partially and with some delay compared with arable land. However, as we will show here, there is scope for successful implementation of new technologies in various climatic regions and for a wide range of applications. The paper presents the most important recent developments of new technologies in agriculture that have scope for application in grasslands. It defines the relevant terms and processes, provides examples of successful implementation, and discusses future directions and research needs.

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Section: Breeding Effects On Symbiotic Interactionsmentioning

confidence: 87%

Frontiers and perspectives on research strategies in grassland technology

Schellberg

Verbruggen

2014

Crop Pasture Sci.

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“…Axis 1 agricultural settings, where cultivars have been shown to vary in AMF diversity or community composition (Xing et al 2012;Lebron et al 2012). Bever et al (1996) did not observe an effect of host genotype in their studies of grassland spore community composition.…”

Section: Axismentioning

confidence: 90%

Hybridization inPopulusalters the species composition and interactions of root-colonizing fungi: consequences for host plant performance

GehringCatherine

JiBaoming

FongSarah

et al. 2014

Botany

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Interactions among plants and soil microbes can significantly influence plant communities, yet we understand little about how hybridization of plant species might alter these interactions. In addition, few studies have explored the effects of different components of soil microbial communities on plant performance. We tested for feedbacks between soil microbes within a Populus hybridizing system using approaches that allowed us to isolate the effects of arbuscular mycorrhizal fungi (AMF) and root endophytes. We found significant differences among the arbuscular mycorrhizal (AM) fungal spore communities cultured from Populus angustifolia James, Populus fremontii S. Watson, and their F 1 hybrids. Populus angustifolia cuttings grew 40% larger when inoculated with AM fungal spores from F 1 hybrids than with spores from P. fremontii, while growth with spores from P. angustifolia was intermediate. However, parental and hybrid inocula promoted growth equally when soil inoculum was used. Roots inoculated with AM fungal spores alone were colonized principally by AMF, while those inoculated with soil were colonized mostly by dark septate endophytes. These results indicate that genetic variation among hybridizing plant species can influence both microbial communities and their interactions with host plants, but these effects depend upon the type of microbe. Furthermore, our results suggest that interactions among fungi during root colonization may alter the composition and function of the plant microbiome.Key words: arbuscular mycorrhizal fungi, interspecific hybrid, dark septate endophyte, plant-soil feedback, Populus spp.Résumé : Les interactions entre les plantes et les microorganismes peuvent influencer significativement les communautés végétales, et pourtant on ne comprend pas bien comment l'hybridation des espèces végétales peut altérer ces interactions. De plus, peu d'études explorent les effets de différentes composantes des communautés microbiennes sur la performance des plantes. Les auteurs ont examiné les rétroactions entre des microorganismes du sol dans un système d'hybridation de Populus, en utilisant des approches permettant d'isoler les effets des champignons mycorhiziens arbusculaires (CMA) et des endophytes racinaires. Ils ont trouvé des différences significatives parmi les communautés sporales des champignons arbusculaires (CA) cultivées à partir des Populus angustifolia James, Populus fremontii S. Watson et leurs hybrides F 1 . Les boutures du P. angustifolia ont montré une augmentation de croissance de 40 % lorsqu'inoculées avec les spores fongiques AM provenant des hybrides F 1 , qu'avec celles provenant du P. fremontii, alors que la croissance avec les spores provenant du P. angustifolia était intermédiaire. Cependant, les inoculums parentaux et hybrides ont exercé la même promotion de croissance lorsque du sol a été utilisé comme inoculum. Les racines inoculées avec des spores fongiques seules ont été colonisées principalement par des CMA, alors que celles inoculées avec le sol ont été colonisées surt...

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“…Breadfruit, Artocarpus altils in Oceania are seedless and dependent upon humans for dispersal (Xing et al, 2012). Domesticated lupines, Lupinus spp., set seed earlier, produce larger seeds than wild lupines (Berger et al, 2017).…”

Section: Human Selectionmentioning

confidence: 99%

Back to the Origin: In Situ Studies Are Needed to Understand Selection during Crop Diversification

et al. 2017

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Crop domestication has been embraced as a model system to study the genetics of plant evolution. Yet, the role of the environment, including biotic forces such as microbial and insect communities, in contributing to crop phenotypes under domestication and diversification has been poorly explored. In particular, there has been limited progress in understanding how human selection, agricultural cultivation (soil disturbance, fertilization, and irrigation), and biotic forces act as selective pressures on crop phenotypes. For example, geographically-structured pathogenic, pestiferous, and mutualistic interactions with crop plants have likely given rise to landraces that interact differently with local microbial and insect communities. In order to understand the adaptive role of crop traits, we argue that more studies should be conducted in the geographic centers of origin to test hypotheses on how abiotic, biotic, and human selective forces have shaped the phenotypes of domesticated plants during crop domestication and subsequent diversification into landraces. In these centers of origin, locally endemic species associated with wild ancestors have likely contributed to the selection on plant phenotypes. We address a range of questions that can only be studied in the geographic center of crop origin, placing emphasis on Mesoamerican polyculture systems, and highlight the significance of in situ studies for increasing the sustainability of modern agricultural systems.

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Mutualism breakdown in breadfruit domestication

Cited by 45 publications

References 62 publications

Frontiers and perspectives on research strategies in grassland technology

Frontiers and perspectives on research strategies in grassland technology

Hybridization inPopulusalters the species composition and interactions of root-colonizing fungi: consequences for host plant performance

Back to the Origin: In Situ Studies Are Needed to Understand Selection during Crop Diversification

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