Results 21 to 30 of about 910,922 (183)

Addressing the Right to Food Through Food Expenditure Burdens: Distributional Evidence Among Low‐Income Farming Families in Brazil (2012–2023)

open access: yesWorld Food Policy, Volume 12, Issue 2, November 2026.
ABSTRACT Household food expenditure continues to be a key factor in ensuring the realization of the Human Right to Adequate Food. Particularly in Brazil, access to food can be limited by economic constraints in vulnerable families, especially among farming families, who have been more vulnerable to food insecurity in recent years in the country.
Lucas de Almeida Moura   +3 more
wiley   +1 more source

Turnip mosaic virus utilizes the lipid droplet biogenesis machinery to facilitate its propagation in plants

open access: yesNew Phytologist, Volume 252, Issue 2, Page 797-816, October 2026.
Potyvirus turnip mosaic virus induces neutral lipid accumulation and lipid droplet biogenesis in infected leaves for its own benefit. See also the Commentary on this article by May & Nagy, 252: 525–527. Summary Lipid droplets (LDs), which are dedicated to storing neutral lipids (NLs), are dynamic organelles involved in numerous other functions ...
Léna Jambou   +16 more
wiley   +1 more source

Neutral interactions among non‐native plants are common

open access: yesNew Phytologist, Volume 252, Issue 1, Page 292-309, October 2026.
Global distribution of studies and overall effect of co‐invasion for all metrics of non‐native plant performance combined. Summary Globalization has accelerated the establishment of non‐native plant species, increasing the prevalence of multispecies co‐invasions; yet interactions among co‐invaders remain poorly understood.
Feng He   +7 more
wiley   +1 more source

Phosphorus addition shifts elevated CO2 effects on soil respiration from rhizosphere to root pathways in a mature eucalypt woodland

open access: yesNew Phytologist, Volume 252, Issue 1, Page 100-113, October 2026.
Summary diagram of the utilization of additional carbohydrates fixed under elevated CO2 belowground in natural low‐phosphorus (P) (a) and P‐fertilized (b) conditions. Soil respiration consists of heterotrophic respiration from microbial activity in bulk soil, autotrophic respiration from fine‐root activity and rhizomicrobial respiration driven by ...
Min Zhao   +11 more
wiley   +1 more source

膜下滴灌条件下水分对棉花根系分布特征的影响

open access: yesShuitu Baochi Xuebao, 2007
通过分层土柱挖掘法,研究膜下滴灌条件下不同滴灌量棉花(Gossypium hirsutum L.)根系的分布特征。结果表明:直径〉1mm的粗根只分布在40cm以上的土层;随着土层深度增加,棉花根系生物量逐渐减少;但随着滴灌量减少,土壤深层根系生物量有增加趋势。不同处理的根系生物量的分布与土层深度呈显著的负指数关系,棉花细根生物量、根长、根表面积在土壤中垂直分布都呈“单峰型”曲线变化规律;但随着滴灌量的减少,棉花根系消弱系数β呈增加趋势。
方怡向   +4 more
doaj  

Plant genotypic diversity and defoliation jointly shape root exudation, fungal communities, and carbon and nitrogen cycling

open access: yesNew Phytologist, Volume 252, Issue 1, Page 324-339, October 2026.
Experimental design. Summary Intraspecific plant diversity is a major component of community diversity, yet its role in shaping plant–microbial interactions and soil functioning remains poorly understood. In particular, plant genotypic diversity may modulate ecosystem responses to defoliation, a key driver of ecosystem processes in grazed systems.
Irene Cordero   +11 more
wiley   +1 more source

坡面薄层水流分离土壤的动力学机理

open access: yesShuitu Baochi Xuebao, 2011
为探讨土壤分离过程的水动力机理及植被根系对土壤分离的抑制作用,采用变坡实验水槽,系统研究坡度、流量及根系对土壤分离速率的定量影响。结果表明,土壤分离速率是坡度、流量及根系密度的函数;植被根系能显著降低土壤分离速率,草地土壤分离速率均值仅为休闲对照地的30.6%;随根系密度增加,土壤分离速率呈指数关系下降;0~4 kg/m3为根系减少土壤分离的有效密度区间,在此范围内,根系密度的增加能引起土壤分离速率的急剧降低,超过4 kg/m3,随根系密度增加,土壤分离速率的降幅并不明显。
唐科明   +3 more
doaj  

籽粒苋不同富钾基因型根际钾营养与根系特性研究

open access: yesShuitu Baochi Xuebao, 2004
在缺钾土培和水培条件下,研究了籽粒苋不同基因型根际和非根际土壤速效钾、缓效钾和全钾含量的变化,以及根际微生物数量、根系主要分泌物、根系质子分泌量和根系CEC的变化。结果表明,籽粒苋根际土壤速效钾和缓效钾含量明显高于非根际土壤,且在根际形成钾的相对富集区,富钾基因型R104和K12根际钾的富集能力明显高于一般基因型;籽粒苋根际土壤的全钾含量却低于非根际土壤,富钾基因型的降低幅度大于一般基因型。富钾基因型根际微生物数量和根系分泌能力显著高于一般基因型 ...
李廷轩 马国瑞
doaj   +2 more sources

國立清華大學工程與系統科學系暨研究所系友電子報2010年02月

open access: yes, 2014
[[abstract]]‧新工科系系主任曾繁根教授就任感言 ‧李敏教授卸任感言[[fileno ...
工程與系統科學系系友會;曾繁根;李敏
core  

A factorial multi‐layer analysis reveals non‐additive sulfur–iron interactions shaping metabolic and transcriptional responses in durum wheat

open access: yesNew Phytologist, Volume 252, Issue 1, Page 192-208, October 2026.
Working model of S‐dependent Fe stress integration in durum wheat. S availability acts as the main factor defining the metabolic and transcriptional state of the plant, whereas Fe mainly affects the intensity of these responses. This is particularly evident for OAS, methionine, citrate and asparagine, which accumulated most strongly under combined S ...
Eleonora Coppa   +9 more
wiley   +1 more source

Home - About - Disclaimer - Privacy