H2020Индивидуална стипендия2015–2017

SSPinROOTS · Small Signalling Peptides for Stimulating Root Growth - a Novel Approach to Improve Nutrient Use Efficiency

„Хоризонт 2020“ — Действия „Мария Склодовска-Кюри“

Период: 2015-05-01 → 2017-04-30
Финансиране от ЕС: 192 163 €
Участници: 2
Схема: MSCA-IF-GF

Линиите свързват координатора с партньорите.

Накратко на български

Малките сигнализиращи пептиди при растението Medicago truncatula регулират развитието на корените и кореновите noduli. Това помага за по-ефективното усвояване на азот и фосфор, което може да намали нуждата от торене и вредните емисии в околната среда.

Този кратък обзор е генериран от изкуствен интелект

Кратко обяснение, генерирано от езиков модел по текста на CORDIS. Оригиналът е по-долу.

Резултати накратко

Small Signalling Peptides for Stimulating Root Growth - a Novel Approach to Improve Nutrient Use Efficiency

Application of nitrogen (N) and phosphorus (P) fertilizers is done to increase crop yields. However, production of N-fertilizers is associated with greenhouse gas emission and P-fertilizers constitute a finite natural resource. Thus, future sustainable agricultural systems rely on efficient utilization of applied N- and P-fertilizers in order to limit environmental impacts, while sustaining agricultural production. Legumes are able to fix N from the atmosphere, thereby reducing the need for fertilization, but only if the plant can take up sufficient amounts of P in order to run various physiological processes. Small signaling peptides (SSPs) have emerged as important regulators of developmental processes in response to environmental stimuli, including root development, an important trait for nutrient uptake. SSPs interact with specific receptors to initiate signaling pathways that regulate gene expression and concurrent identification of peptides and their receptors is therefore important. In this project, SSPs produced by the plant in response to N and P availability have been identified in the legume model plant Medicago truncatula (Gaertn.). Application of synthetically produced peptides to roots has been shown to change root architecture and development of root nodules in which N-fixation takes place. More detailed studies of selected SSPs and their corresponding receptors are currently undertaken in Medicago to unravel the mechanisms controlling the observed root and nodule developmental phenotypes.

Текст от CORDIS, на английски · Данни: CORDIS, © Европейски съюз

Цел на проекта

Plants in the legume (Fabaceae) family are able to fix atmospheric N2 under N-limiting conditions, thereby diminishing the need for N-fertilization. N2-fixation has a high requirement for photosynthates and ATP, and is thus tightly controlled by both the N-availability in the soil and P-level in the plant. Increasing the P-uptake through formation of branched root system and abundant root hairs will increase the N2-fixing capacity and thereby improve the overall nutrient use efficiency (NUE). Small signalling peptides are a largely un-characterized group of regulatory molecules in plants that induce signal transduction pathways upon binding to their complementary receptor signalling modules. Even in the most studied model plant Arabidopsis thaliana only a few of the more than one thousand putative SSPs have been characterized. Very recent work has revealed unique roles of SSPs in alteration of the root system architecture in response to nutrient availability, including the formation of root hairs under P-limiting conditions. Hence, a deeper understanding of the functional roles of SSPs appears to be of key importance for improving NUE. This project aims at advancing our knowledge of SSPs involved in the adaptation to nutrient limiting conditions in legumes beyond current state-of-the-art. This will be achieved using a novel bottom-up bioinformatic approach and unique mutant populations. The scientific objectives are (i) to identify the receptor signalling module and the down-stream target genes in the signal transduction pathway of a newly discovered P-responsive SSP essential for root hair formation, and (ii) to discover unknown N- and P-responsive SSPs in the roots and nodules of the legume model species Medicago truncatula with the aim of (iii) investigating the effect of SSPs on improving NUE. The proposed work will substantially advance our understanding of the functions in which SSPs are involved and will open up for new solutions aimed at improving NUE.

Оригинален текст от CORDIS (на английски).

Участници

KOBENHAVNS UNIVERSITET · KOBENHAVNКоординаторДания
THE SAMUEL ROBERTS NOBLE FOUNDATION · ARDMORE OKСъединени щати