Abstract：
:Regulation of tetrapyrrole biosynthesis is crucial to plant metabolism. The two pivotal control points are formation of the initial precursor, 5-aminolaevulinic acid (ALA), and the metal-ion insertion step: chelation of Fe(2+) into protoporphyrin IX leads to haem and phytochromobilin, whereas insertion of Mg(2+) is the first step to chlorophyll. Recent studies with mutants and transgenic plants have demonstrated that perturbation of the branch point affects ALA formation. Moreover, one of the signals that controls the expression of genes for nuclear-encoded chloroplast proteins has been shown to be Mg-protoporphyrin-IX. Here, we discuss the regulation of branch-point flux and the relative contributions of the haem and chlorophyll branches to the regulation of ALA synthesis and thus to flow through the tetrapyrrole pathway.
journal_name
Trends Plant Scijournal_title
Trends in plant scienceauthors
Cornah JE,Terry MJ,Smith AGdoi
10.1016/S1360-1385(03)00064-5subject
Has Abstractpub_date
2003-05-01 00:00:00pages
224-30issue
5eissn
1360-1385issn
1878-4372pii
S1360-1385(03)00064-5journal_volume
8pub_type
杂志文章,评审abstract：:As the major transporters and distributors of water and minerals, xylem vessels and tracheids are the lifeline of plants. Interestingly, the building blocks of these water pipes are dead tracheary elements and vessel elements that have the process of cell death integrated into their differentiation programme. Using th...
journal_title：Trends in plant science
pub_type： 杂志文章,评审
doi：10.1016/j.tplants.2003.08.003
更新日期：2003-10-01 00:00:00
abstract：:Plants form diverse symbioses with nitrogen-fixing bacteria to gain access to ammonium, a product of the prokaryote-exclusive enzyme nitrogenase. Improving the symbiotic effectiveness of crop plants like maize, wheat or rice is a highly topical challenge and could help reduce the need for energy-intense nitrogen ferti...
journal_title：Trends in plant science
pub_type： 杂志文章,评审
doi：10.1016/j.tplants.2008.11.009
更新日期：2009-02-01 00:00:00
abstract：:Regulatory non-coding RNAs are emerging as key players in host-pathogen interactions. Small RNAs such as microRNAs are implicated in regulating plant transcripts involved in immunity and defence. Surprisingly, RNAs with silencing properties can be translocated from plant hosts to various invading pathogens and pests. ...
journal_title：Trends in plant science
pub_type： 杂志文章,评审
doi：10.1016/j.tplants.2016.05.008
更新日期：2016-09-01 00:00:00
abstract：:Seeds from various angiosperm species produce polysaccharide mucilage facilitating germination and, therefore, conferring major evolutionary advantages. The seed epidermal mucilage secretory cells (MSCs) undergo numerous tightly controlled changes of their extracellular matrixes (ECMs) throughout seed development. Rec...
journal_title：Trends in plant science
pub_type： 杂志文章,评审
doi：10.1016/j.tplants.2015.04.008
更新日期：2015-08-01 00:00:00
abstract：:The commercial release of third-generation sequencing technologies (TGSTs), giving long and ultra-long sequencing reads, has stimulated the development of new tools for assembling highly contiguous genome sequences with unprecedented accuracy across complex repeat regions. We survey here a wide range of emerging seque...
journal_title：Trends in plant science
pub_type： 杂志文章,评审
doi：10.1016/j.tplants.2019.05.003
更新日期：2019-08-01 00:00:00
abstract：:Although aluminum (Al) toxicity represents a global agricultural problem, the biochemical targets for Al remain elusive. Recently identified Arabidopsis mutants with increased Al tolerance provide evidence of DNA as one of the main targets of Al. This insight could lead the way for novel strategies to generate Al-tole...
journal_title：Trends in plant science
pub_type： 杂志文章
doi：10.1016/j.tplants.2016.12.003
更新日期：2017-02-01 00:00:00
abstract：:Polar growth in root hairs and pollen tubes is an excellent model for investigating plant cell size regulation. While linear plant growth is historically explained by the acid growth theory, which considers that auxin triggers apoplastic acidification by activating plasma membrane P-type H+-ATPases (AHAs) along with c...
journal_title：Trends in plant science
pub_type： 杂志文章,评审
doi：10.1016/j.tplants.2018.02.008
更新日期：2018-06-01 00:00:00
abstract：:Climatic extremes threaten agricultural sustainability worldwide. One approach to increase plant water-use efficiency (WUE) is to introduce crassulacean acid metabolism (CAM) into C3 crops. Such a task requires comprehensive systems-level understanding of the enzymatic and regulatory pathways underpinning this tempora...
journal_title：Trends in plant science
pub_type： 杂志文章,评审
doi：10.1016/j.tplants.2014.01.006
更新日期：2014-05-01 00:00:00
abstract：:Glycogen synthase kinase 3 (GSK3) proteins, also known as SHAGGY-like kinases, have many important cell signalling roles in animals, fungi and amoebae. In particular, GSK3s participate in key developmental signalling pathways and also regulate the cytoskeleton. GSK3-encoding genes are also present in all land plants a...
journal_title：Trends in plant science
pub_type： 杂志文章,评审
doi：10.1016/j.tplants.2011.10.002
更新日期：2012-01-01 00:00:00
abstract：:Recently established links between the tomato cyclophilin A-type protein DIAGEOTROPICA and the regulation of polar auxin transport provide first mechanistic insights into the function of this enigmatic locus. ...
journal_title：Trends in plant science
pub_type： 评论,杂志文章
doi：10.1016/j.tplants.2015.04.009
更新日期：2015-06-01 00:00:00
abstract：:Recent work has resulted in the identification of >100 endogenous non-coding small RNA molecules in plants. These micro-RNAs (miRNAs) have the capacity to regulate a range of predicted target mRNAs, many of which are transcription factors involved in the control of meristem identity. Mutants defective in either CARPEL...
journal_title：Trends in plant science
pub_type： 杂志文章
doi：10.1016/s1360-1385(02)02361-0
更新日期：2002-11-01 00:00:00
abstract：:Hormesis is a biphasic dose-response relationship with contrasting effects of low versus high doses of stress. Hormesis is rapidly developing in plant science research and has wide implications for risk assessment, stress biology, and agriculture. Here, we explore selected areas of importance to the concept of hormesi...
journal_title：Trends in plant science
pub_type： 杂志文章,评审
doi：10.1016/j.tplants.2020.05.006
更新日期：2020-11-01 00:00:00
abstract：:The Arabidopsis genome encodes approximately 20 different mitogen-activated protein kinases (MAPKs) that are likely to be involved in growth, development and responses to endogenous and environmental cues. Several plant MAPKs are activated by a variety of stress stimuli, including pathogen infection, wounding, tempera...
journal_title：Trends in plant science
pub_type： 杂志文章,评审
doi：10.1016/s1360-1385(01)02103-3
更新日期：2001-11-01 00:00:00
abstract：:The evolution of land plants approximately 470 million years ago created a new adaptive zone for natural enemies (attackers) of plants. In response to attack, plants evolved highly effective, inducible defense systems. Two plant hormones modulating inducible defenses are salicylic acid (SA) and jasmonic acid (JA). Cur...
journal_title：Trends in plant science
pub_type： 杂志文章,评审
doi：10.1016/j.tplants.2012.02.010
更新日期：2012-05-01 00:00:00
abstract：:Metabolism depends on inorganic phosphate (P(i)) as reactant, allosteric effector and regulatory moiety in covalent protein modification. To cope with P(i) shortage (a common situation in many ecosystems), plants activate a set of adaptive responses to enhance P(i) recycling and acquisition by reprogramming metabolism...
journal_title：Trends in plant science
pub_type： 杂志文章,评审
doi：10.1016/j.tplants.2004.09.003
更新日期：2004-11-01 00:00:00
abstract：:Mutator (Mu) element insertion has become the main way of mutating and cloning maize genes, but we are only beginning to understand how this transposon system is regulated. Mu elements are under tight developmental control and are subject to a form of epigenetic regulation that shares some features with the regulation...
journal_title：Trends in plant science
pub_type： 杂志文章,评审
doi：10.1016/s1360-1385(02)02347-6
更新日期：2002-11-01 00:00:00
abstract：:January 1974: In the dark of the electron microscope room, Paola Bonfante started up and looked again at the greenish screen; she was indeed looking at a round body very similar to a bacterium. Unexpectedly, this faint body was inside the cytoplasm of a mycorrhizal symbiotic fungus, which was inside the root cells of ...
journal_title：Trends in plant science
pub_type： 面试
doi：10.1016/j.tplants.2014.08.008
更新日期：2014-12-01 00:00:00
abstract：:The goal of biofortification is to develop plants that have an increased content of bioavailable nutrients in their edible parts. Cereals serve as the main staple food for a large proportion of the world population but have the shortcoming, from a nutrition perspective, of being low in zinc and other essential nutrien...
journal_title：Trends in plant science
pub_type： 杂志文章,评审
doi：10.1016/j.tplants.2008.06.005
更新日期：2008-09-01 00:00:00
abstract：:Over the past decade, the ABC model of flower development has been widely promulgated. However, correct flower-organ development requires not only the ABC genes but also the SEPALLATA genes. When the SEPALLATA genes are expressed together with the ABC genes, both vegetative and cauline leaves are converted to floral o...
journal_title：Trends in plant science
pub_type： 杂志文章,评审
doi：10.1016/s1360-1385(01)01987-2
更新日期：2001-07-01 00:00:00
abstract：:Phyllotaxis, the geometry of leaf arrangement around stems, determines plant architecture. Molecular interactions coordinating the formation of phyllotactic patterns have mainly been studied in multicellular shoot apical meristems of flowering plants. Phyllotaxis evolved independently in the major land plant lineages....
journal_title：Trends in plant science
pub_type： 杂志文章,评审
doi：10.1016/j.tplants.2020.09.014
更新日期：2021-02-01 00:00:00
abstract：:Micronutrient deficiencies are responsible for so-called 'hidden undernutrition'. In particular, iron (Fe) deficiency adversely affects growth, immune function and can cause anaemia. However, supplementation of iron can exacerbate infectious diseases and current policies of iron therapy carefully evaluate the risks an...
journal_title：Trends in plant science
pub_type： 杂志文章,评审
doi：10.1016/j.tplants.2011.10.003
更新日期：2012-01-01 00:00:00
abstract：:The plant holobiont extends the plant's capacity for nutrient acquisition and stress protection. Recent studies show that under biotic stress plants can promote the acquisition of certain beneficial bacteria to their rhizosphere. Active emission of volatile organic compounds (VOCs) is a newly identified mechanism util...
journal_title：Trends in plant science
pub_type： 杂志文章
doi：10.1016/j.tplants.2019.01.008
更新日期：2019-03-01 00:00:00
abstract：:In plants, carotenoid accumulation and sequestration take place within chloroplasts and chromoplasts. In the chloroplast, practically all carotenoids are associated with chlorophyll-binding proteins, whereas chromoplasts have developed a unique mechanism to sequester carotenoids within specific lipoprotein structures....
journal_title：Trends in plant science
pub_type： 杂志文章
doi：10.1016/s1360-1385(99)01414-4
更新日期：1999-06-01 00:00:00
abstract：:Natural genetic variation within plant species is at the core of plant science ranging from agriculture to evolution. Whereas much progress has been made in mapping quantitative trait loci (QTLs) controlling this natural variation, the elucidation of the underlying molecular mechanisms has remained a bottleneck. Recen...
journal_title：Trends in plant science
pub_type： 杂志文章,评审
doi：10.1016/j.tplants.2007.11.008
更新日期：2008-02-01 00:00:00
abstract：:Plants need to acquire nitrogen (N) efficiently from the soil for growth. Nitrate is one of the major N sources for higher plants. Therefore, nitrate uptake and allocation are key factors in efficient N utilization. Membrane-bound transporters are required for nitrate uptake from the soil and for the inter- and intrac...
journal_title：Trends in plant science
pub_type： 杂志文章,评审
doi：10.1016/j.tplants.2012.04.006
更新日期：2012-08-01 00:00:00
abstract：:The Waxy (Wx) gene that governs amylose synthesis is an old but widely used target in improving the quality of starchy crops. New genome-editing strategies are being deployed to create beneficial Wx alleles with finely tuned amylose content (AC). Precise targeting must be combined with traditional approaches to develo...
journal_title：Trends in plant science
pub_type： 杂志文章
doi：10.1016/j.tplants.2020.07.009
更新日期：2020-10-01 00:00:00
abstract：:Plants 'forage' for light in plant canopies using a variety of photosensory systems. Far-red radiation (FR) reflected by neighbours is an early signal of competition that elicits anticipatory shade-avoidance responses. In Arabidopsis and cucumber, perception of reflected FR requires phytochrome B. Horizontal blue (B) ...
journal_title：Trends in plant science
pub_type： 杂志文章
doi：10.1016/s1360-1385(99)01383-7
更新日期：1999-03-01 00:00:00
abstract：:The sulfur-containing amino acid methionine is a nutritionally important essential amino acid and is the precursor of several metabolites that regulate plant growth and responses to the environment. Methionine production is largely regulated by cystathionine gamma-synthase, the first specific enzyme for its synthesis....
journal_title：Trends in plant science
pub_type： 杂志文章
doi：10.1016/s1360-1385(02)02227-6
更新日期：2002-04-01 00:00:00
abstract：:Intelligent behaviour, even in humans, is an aspect of complex adaptive behaviour that provides a capacity for problem solving. This article assesses whether plants have a capacity to solve problems and, therefore, could be classified as intelligent organisms. The complex molecular network that is found in every plant...
journal_title：Trends in plant science
pub_type： 杂志文章
doi：10.1016/j.tplants.2005.07.005
更新日期：2005-09-01 00:00:00
abstract：:Soil salinity is a major abiotic stress in plant agriculture worldwide. This has led to research into salt tolerance with the aim of improving crop plants. However, salt tolerance might have much wider implications because transgenic salt-tolerant plants often also tolerate other stresses including chilling, freezing,...
journal_title：Trends in plant science
pub_type： 杂志文章
doi：10.1016/s1360-1385(00)01838-0
更新日期：2001-02-01 00:00:00
