Promotores: C.A.J. Knibbe, D. Tibboel, Co-Promotor: P. Bruins

Promotor: J. van der Greef; Co-promotor: E. van Wijk, M. Wang

Promotor: J. van der Greef, T. Hankemeier; Co-promotor: H.A. van Wietmarschen

In this thesis, two potential therapeutic targets for diabetic nephropathy were dentified and investigated. First, we show that glomerular clusterin is upregulated in diabetic nephropathy and demonstrated that recombinant clusterin protein can protect the podocytes against oxidative stress in vitro.…

Plant exudates appeared long time ago in the history line of life in the early Devonian. They are typical saps produced by specialized cells.

Maak een reis door de geschiedenis en de toekomst van het leven op aarde.

De missie van het Plant Sciences onderzoeksprogramma is om bij te dragen aan de duurzame productie van gewassen van hoge kwaliteit, bloemen en hoogwaardige producten met een biologische basis. Dit wordt gerealiseerd door het opdoen van fundamentele kennis over biologische processen omtrent de ontwikkeling…

Voor groep 4/5 basisschool.

In this thesis, the role of plant-mediated soil legacy effects in shaping aboveground plant-insect interactions was investigated.

Biodiversity enables ecosystems to thrive through the synergy of functional differences among organisms. While human well-being strongly depends on biodiversity-driven ecosystem services, human actions are also at the root of current unprecedented biodiversity declines.

Plants are colonized by an astounding number of microorganisms that can provide different life-support functions, including nutrient acquisition and protection against (a)biotic stresses like drought or pathogen attack.

Plant diversity is essential for us and our planet as it sustains the stability of our ecosystems, provides vital materials and food to us and supports many ecosystem services.

The overall objectives of my thesis are to investigate the dynamics of the sorghum root microbiome and to explore the beneficial effects of the root microbiome on sorghum growth and stress tolerance.

Plant-microbe interaction resulted in different physio/chemical responses by host plant and interacting rhizobacteria.

In light of climate change, it is crucial to determine whether plant species can adapt to future climates to avoid extinction. Plants adapt to various conditions by altering their functional traits, such as leaf size or photosynthetic rate. Some traits appear linked and vary together between species,…

Soil biodiversity is of great importance for the maintenance of multifunctionality in terrestrial ecosystems.

Wetland plants are distinguished from plants of other terrestrial ecosystems by their adaptations to specific habitat stresses, including waterlogged and flooding and the subsequent abundance of phytotoxic compounds.

Promotor: Prof.dr. P. Hooykaas, Co-promotor: R. Offringa

Plants and soils from natural ecosystems harbor great diversity of soil microorganisms, which could potentially contribute to the sustainability of horticulture. The knowledge about using wild plant species and soil from natural ecosystem to improve the crop health will advance the application of ecological…

Agrobacterium-mediated transformation (AMT) has abundantly been used for scientific research for identifying valuable traits.

Promotor: G.R. de Snoo, Co-promotor: C.J.M. Muster

This thesis describes how different colours of light affect various aspects of the growth and development of Arabidopsis and tomato plants⁠.

The endophytic microbiota is a community of various microorganisms that reside in plant tissue. These microbes are known to promote plant health and resilience, and their members do not simply exist side by side.

Promotor: Prof.dr. P.G.L Klinkhamer, Co-promotor: K. Vrieling

In this thesis, I focused on studying the above- and belowground interactions of J. vulgaris from a plant-soil feedback (hereafter, PSF) perspective. I investigated the temporal variation of negative PSF and examined the effects of root-associated bacteria on plant performance and aboveground herbiv…

The plant hormone auxin regulates plant growth and development through polar cell-to-cell transport-generated maxima and minima. PIN FORMED (PIN) auxin efflux carriers determine the direction of this auxin flow through their asymmetric placement on the plasma membrane (PM).

Trigonostemon Blume is a plant genus in the family Euphorbiaceae comprising 59 species.

Microbiome composition of the spermosphere and the rhizosphere of wild and modern bean accessions grown in an agricultural and a native soil from Colombia was characterized by metagenomics and cultivation-dependent approaches.

Promotor: Prof.dr. M. Danhof, Co-promotor: O.E. Della Pasqua

Plantaardige plakdruppels voor gewasbescherming tegen trips: Sommige planten zoals zonnedauw en tomaat beschermen zichzelf met plakkerige haartjes die geleedpotige herbivoren afstoten of zelfs kunnen vangen.

We showed that constitutive and inducible chemical and morphological defenses against Western flower thrips differ between tomato and chrysanthemum plants.

Salicylic acid (SA) is a plant hormone, which is involved in the defense responses to pathogens and to abiotic stress, and in the regulation of plant growth and development.

Supervisor: P.J.J. Hooykaas Co-Supervisor: R. Offringa

Multicellular giant algae Chara species have been widely used in physiological studies for decades.

Promotor: G.R. de Snoo, Co-promotor: H.H. de Iongh, C.J.M. Musters

Prof.dr. J. Memelink

By growing in a soil plants change the biotic and abiotic properties of the soil in which they grow.

Herstel van de natuur op uitgeputte landbouwgrond en in natuurgebieden verloopt moeizaam. ‘Bodemtransplantatie’ kan mogelijk uitkomst bieden. Dat betoogt Martijn Bezemer, hoogleraar Ecologie van Plant-Microbe-Insect interacties. Oratie op 18 december.

Plants, are sessile organisms, have developed strategies to adapt to changes in their environment, in part by altering their growth and development.

Oogst na oogst binnenhalen van rijstveld, zonder nieuwe rijstplanten te zetten? Door een ontdekking komt dit scenario misschien wel dichterbij. Leidse wetenschappers hebben een gen ontdekt waarmee ze eenjarige planten na het bloeien opnieuw laten groeien, in plaats van dat de planten sterven. Publicatie…

Zonder een gewas opnieuw te zaaien toch nakomelingen produceren, die zelfs groter kunnen zijn dan de ouderplant. Volgens Leidse onderzoekers is dat mogelijk door het overstimuleren van één gen. Daarmee verjongt een cel en gaat deze terug naar de embryonale fase.

As a contribution to the changing legislation and evolving societal attitudes concerning environmental issues, this project aims to enhance and manipulate the plants’ own natural defense mechanisms against western flower thrips (WFT).

Planten die door minder diersoorten worden bestoven, zijn mogelijk minder kwetsbaar voor verandering dan gedacht. Dat ontdekte Saskia Klumpers in de Rocky Mountains in Colorado. Promotie op 15 december.

Breeding for resistance becomes more and more important because we want to reduce the use of pesticides. A fast and cheap alternative can be to make use of morphological or chemical markers.

Zet een plant in de vensterbank en hij zal binnen enkele uren naar het licht gegroeid zijn. Voor het eerst is dit mechanisme in planten op moleculair niveau in kaart gebracht door Leidse biologen en onderzoekers uit Gent en Lausanne. Ze publiceerden hierover in het prestigieuze Nature Cell Biology.

‘Dit was een ontdekking die we niet hadden zien aankomen,’ vertelt Remko Offringa, hoogleraar ontwikkelingsgenetica van planten. Vandaag publiceert hij in Current Biology een nieuwe functie van een veelzijdig gen: het maakt voor planten het verschil tussen een kruidachtige of een verhoute stengel.…