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Talks related to plants in the University of Cambridge
Updated: 58 min 32 sec ago

Thu 26 Jan 12:15: Alternative meristems: mapping the expression landscape of transcription factor in the liverwort Marchantia polymorpha

Fri, 20/01/2023 - 10:57
Alternative meristems: mapping the expression landscape of transcription factor in the liverwort Marchantia polymorpha

Transcription factors (TFs) are essential for the regulation of gene expression and cell fate determination. Characterizing the transcriptional activity of TF genes, in time and in space, is a critical step toward understanding complex biological systems. The vegetative gametophyte of bryophytes resembles some characteristics with the shoot-apical meristem of flowering plants. However, the identity and expression profiles of TFs associated with the organization are largely unknown. With only ~450 TF genes, Marchantia polymorpha is an outstanding model system for systems biology. Here we generated a near-complete collection of promoter elements derived Marchantia TFs. We experimentally tested in planta transcriptional fluorescent reporters for all TFs in the collection and systematically mapped the expression patterns in the Marchantia gemma. This allowed us to delimitate expression domains and identify a unique set of TFs expressed in the stem-cell zone, providing new insight into the dynamic regulation of the gametophytic meristem and its evolution and identify new cell-type specific promoters.

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Thu 02 Feb 12:15: Soil microbiomes and one Health

Wed, 18/01/2023 - 16:07
Soil microbiomes and one Health

The soil microbiome is highly diverse and comprises up to one quarter of Earth’s diversity. Yet, how such a diverse and functionally complex microbiome influences ecosystem functioning and sustainability remains unclear. In particular, it is unresolved whether soil microbiome management can help to develop more sustainable agroecosystems. Our research has demonstrated that microbiome management, in particular, inoculation with beneficial arbuscular mycorrhizal fungi (AMF) can promote crop yield and plant health in agricultural fields. Interestingly inoculation success was best predicted by soil microbiome characteristics, specifically pathogen occurrence. Moreover, the application of pesticides in agricultural fields reduced AMF richness and the ability of AMF to acquire nutrients for plants. Finally, by analysing the soil microbiome across >700 sites in Europe we demonstrate the impact of land-use on a wide range of functional groups including plant pathogens. Overall, our work demonstrates that soil microbiome engineering has a large potential to contribute to soil health and sustainable plant production.

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Thu 23 Feb 12:15: Circadian regulation of sunflower development

Wed, 18/01/2023 - 08:48
Circadian regulation of sunflower development

Plants display a remarkable degree of plasticity, altering their growth and development in response to an array of environmental cues. We use domesticated sunflower as a model to investigate how this plasticity is modified by the circadian system. Domesticated sunflower is well-known for its heliotropic behavior, with stems bending to follow the sun from east to west during the day and then bending from west to east during the night so they face east before the sun rises in the morning. Sunflowers are also famous for the remarkable spiral arrangement of florets on their composite inflorescences, a pattern imposed early in development. It is less recognized that during late-stage floral development this spiral pattern is transformed into one of concentric rings. We find that both solar tracking of stems and spatial patterns seen in late-stage floral development are generated by interactions between the circadian system and environmental signaling pathways and demonstrate the importance of this coordination for plant reproductive fitness.

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Thu 02 Feb 12:15: Plant Sciences Seminar

Fri, 13/01/2023 - 11:56
Plant Sciences Seminar

Abstract not available

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Thu 08 Jun 12:15: Plant Sciences Seminar

Tue, 10/01/2023 - 13:38
Plant Sciences Seminar

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Thu 09 Feb 12:15: Plant Sciences Seminar

Mon, 09/01/2023 - 16:42
Plant Sciences Seminar

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Thu 01 Jun 12:15: Plant Sciences Seminar

Mon, 09/01/2023 - 14:27
Plant Sciences Seminar

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Thu 18 May 12:15: Plant Sciences Seminar

Mon, 09/01/2023 - 14:25
Plant Sciences Seminar

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Thu 25 May 12:15: Plant Sciences Seminar

Mon, 09/01/2023 - 14:25
Plant Sciences Seminar

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Thu 11 May 12:15: Plant Sciences Seminar

Mon, 09/01/2023 - 14:23
Plant Sciences Seminar

Abstract not available

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