Abstract：
BACKGROUND:The physico-chemical properties of chlorophylls b and c have been known for decades. Yet the mechanisms by which these secondary chlorophylls support assembly and accumulation of light-harvesting complexes in vivo have not been resolved. PRESENTATION:Biosynthetic modifications that introduce electronegative groups on the periphery of the chlorophyll molecule withdraw electrons from the pyrrole nitrogens and thus reduce their basicity. Consequently, the tendency of the central Mg to form coordination bonds with electron pairs in exogenous ligands, a reflection of its Lewis acid properties, is increased. Our hypothesis states that the stronger coordination bonds between the Mg atom in chlorophyll b and chlorophyll c and amino acid sidechain ligands in chlorophyll a/b- and a/c-binding apoproteins, respectively, enhance their import into the chloroplast and assembly of light-harvesting complexes. TESTING:Several apoproteins of light-harvesting complexes, in particular, the major protein Lhcb1, are not detectable in leaves of chlorophyll b-less plants. A direct test of the hypothesis--with positive selection--is expression, in mutant plants that synthesize only chlorophyll a, of forms of Lhcb1 in which weak ligands are replaced with stronger Lewis bases. IMPLICATIONS:The mechanistic explanation for the effects of deficiencies in chlorophyll b or c points to the need for further research on manipulation of coordination bonds between these chlorophylls and chlorophyll-binding proteins. Understanding these interactions will possibly lead to engineering plants to expand their light-harvesting antenna and ultimately their productivity.
journal_name
BMC Plant Bioljournal_title
BMC plant biologyauthors
Eggink LL,Park H,Hoober JKdoi
10.1186/1471-2229-1-2keywords:
subject
Has Abstractpub_date
2001-01-01 00:00:00pages
2issn
1471-2229journal_volume
1pub_type
杂志文章abstract：BACKGROUND:The translocator protein 18 kDa (TSPO), previously known as the peripheral-type benzodiazepine receptor (PBR), is important for many cellular functions in mammals and bacteria, such as steroid biosynthesis, cellular respiration, cell proliferation, apoptosis, immunomodulation, transport of porphyrins and ani...
journal_title：BMC plant biology
pub_type： 杂志文章
doi：10.1186/1471-2229-11-108
更新日期：2011-06-20 00:00:00
abstract：BACKGROUND:APETALA2-like genes encode plant-specific transcription factors, some of which possess one microRNA172 (miR172) binding site. The miR172 and its target euAP2 genes are involved in the process of phase transformation and flower organ development in many plants. However, the roles of miR172 and its target AP2 ...
journal_title：BMC plant biology
pub_type： 杂志文章
doi：10.1186/s12870-019-1936-2
更新日期：2019-08-01 00:00:00
abstract：BACKGROUND:Clubroot, caused by Plasmodiophora brassicae Woronin, is a very important disease of Brassica species. Management of clubroot relies heavily on genetic resistance. In a cross of Brassica nigra lines PI 219576 (highly resistant, R) × CR2748 (highly susceptible, S) to clubroot, all F1 plants were resistant to ...
journal_title：BMC plant biology
pub_type： 杂志文章
doi：10.1186/s12870-019-1844-5
更新日期：2019-05-29 00:00:00
abstract：BACKGROUND:Flavonoids have essential roles in flower pigmentation, fibre development and disease resistance in cotton. Previous studies show that accumulation of naringenin in developing cotton fibres significantly affects fibre growth. This study focused on determining the effects of the flavonoids naringenin, dihydro...
journal_title：BMC plant biology
pub_type： 杂志文章
doi：10.1186/s12870-019-2054-x
更新日期：2019-10-24 00:00:00
abstract：BACKGROUND:Plant defensins are small (45-54 amino acids), basic, cysteine-rich proteins that have a major role in innate immunity in plants. Many defensins are potent antifungal molecules and are being evaluated for their potential to create crop plants with sustainable disease resistance. Defensins are produced as pre...
journal_title：BMC plant biology
pub_type： 杂志文章
doi：10.1186/1471-2229-14-41
更新日期：2014-02-05 00:00:00
abstract：BACKGROUND:PLATZ proteins are a novel class of plant-specific zinc-dependent DNA-binding proteins that are classified as transcription factors (TFs). However, their common biochemical features and functions are poorly understood. RESULT:Here, we identified and cloned 17 PLATZ genes in the maize (Zea mays) genome. All ...
journal_title：BMC plant biology
pub_type： 杂志文章
doi：10.1186/s12870-018-1443-x
更新日期：2018-10-05 00:00:00
abstract：BACKGROUND:microRNAs (miRNAs) are implicated in plant development processes and play pivotal roles in plant adaptation to environmental stresses. Salicornia europaea, a salt mash euhalophyte, is a suitable model plant to study salt adaptation mechanisms. S. europaea is also a vegetable, forage, and oilseed that can be ...
journal_title：BMC plant biology
pub_type： 杂志文章
doi：10.1186/s12870-015-0451-3
更新日期：2015-02-26 00:00:00
abstract：BACKGROUND:Dissecting the genetic basis and regulatory mechanisms for the biosynthesis and accumulation of nutrients in maize could lead to the improved nutritional quality of this crop. Gene expression is regulated at the genomic, transcriptional, and post-transcriptional levels, all of which can produce diversity amo...
journal_title：BMC plant biology
pub_type： 杂志文章
doi：10.1186/s12870-017-1119-y
更新日期：2017-10-16 00:00:00
abstract：BACKGROUND:Plant-mediated RNAi (PMRi) silencing of insect genes has enormous potential for crop protection, but whether it works robustly under field conditions, particularly with lepidopteran pests, remains controversial. Wild tobacco Nicotiana attenuata and cultivated tobacco (N. tabacum) (Solanaceae) is attacked by ...
journal_title：BMC plant biology
pub_type： 杂志文章
doi：10.1186/s12870-017-1149-5
更新日期：2017-11-13 00:00:00
abstract：BACKGROUND:Herbivory imposes an important selective pressure on plants. In Arabidopsis thaliana leaf trichomes provide a key defense against insect herbivory; however, trichome production incurs a fitness cost in the absence of herbivory. Previous work on A. thaliana has shown an increase in trichome density in respons...
journal_title：BMC plant biology
pub_type： 杂志文章
doi：10.1186/1471-2229-14-119
更新日期：2014-05-05 00:00:00
abstract：BACKGROUND:The sweet, floral flavor typical of Muscat varieties (Muscats), due to high levels of monoterpenoids (geraniol, linalool and nerol), is highly distinct and has been greatly appreciated both in table grapes and in wine since ancient times. Muscat flavor determination in grape (Vitis vinifera L.) has up to now...
journal_title：BMC plant biology
pub_type： 杂志文章
doi：10.1186/1471-2229-10-241
更新日期：2010-11-09 00:00:00
abstract：BACKGROUND:The genus Citrus encompasses major cultivated plants such as sweet orange, mandarin, lemon and grapefruit, among the world's most economically important fruit crops. With increasing volumes of transcriptomics data available for these species, Gene Co-expression Network (GCN) analysis is a viable option for p...
journal_title：BMC plant biology
pub_type： 杂志文章
doi：10.1186/1471-2229-14-186
更新日期：2014-07-15 00:00:00
abstract：BACKGROUND:The tomato kinase Pto confers resistance to bacterial speck disease caused by Pseudomonas syringae pv. tomato in a gene for gene manner. Upon recognition of specific avirulence factors the Pto kinase activates multiple signal transduction pathways culminating in induction of pathogen defense. The soluble cyt...
journal_title：BMC plant biology
pub_type： 杂志文章
doi：10.1186/1471-2229-6-22
更新日期：2006-10-06 00:00:00
abstract：BACKGROUND:Berry size is considered as one of the main selection criteria in table grape breeding programs. However, this is a quantitative and polygenic trait, and its genetic determination is still poorly understood. Considering its economic importance, it is relevant to determine its genetic architecture and elucida...
journal_title：BMC plant biology
pub_type： 杂志文章
doi：10.1186/s12870-016-0789-1
更新日期：2016-04-26 00:00:00
abstract：BACKGROUND:Multidrug and toxic compound extrusion (MATE) transporter proteins are present in all organisms. Although the functions of some MATE gene family members have been studied in plants, few studies have investigated the gene expansion patterns, functional divergence, or the effects of positive selection. RESULT...
journal_title：BMC plant biology
pub_type： 杂志文章
doi：10.1186/s12870-016-0895-0
更新日期：2016-09-26 00:00:00
abstract：BACKGROUND:Assembly of stable light-harvesting complexes (LHCs) in the chloroplast of green algae and plants requires synthesis of chlorophyll (Chl) b, a reaction that involves oxygenation of the 7-methyl group of Chl a to a formyl group. This reaction uses molecular oxygen and is catalyzed by chlorophyllide a oxygenas...
journal_title：BMC plant biology
pub_type： 杂志文章
doi：10.1186/1471-2229-4-5
更新日期：2004-04-15 00:00:00
abstract：BACKGROUND:Cultivated peanut or groundnut (Arachis hypogaea L.) is the fourth most important oilseed crop in the world, grown mainly in tropical, subtropical and warm temperate climates. Due to its origin through a single and recent polyploidization event, followed by successive selection during breeding efforts, culti...
journal_title：BMC plant biology
pub_type： 杂志文章
doi：10.1186/1471-2229-8-55
更新日期：2008-05-15 00:00:00
abstract：BACKGROUND:Among eukaryotic organisms, alternative splicing is an important process that can generate multiple transcripts from one same precursor messenger RNA, which greatly increase transcriptome and proteome diversity. This process is carried out by a super-protein complex defined as the spliceosome. Specifically, ...
journal_title：BMC plant biology
pub_type： 杂志文章
doi：10.1186/s12870-020-02570-6
更新日期：2020-08-18 00:00:00
abstract：BACKGROUND:In Quercus suber, cork oak, a Mediterranean forest tree of economic and social interest, rapid production of isogenic lines and clonal propagation of elite genotypes have been achieved by developing in vitro embryogenesis from microspores and zygotic embryos respectively. Despite its high potential in tree b...
journal_title：BMC plant biology
pub_type： 杂志文章
doi：10.1186/s12870-014-0224-4
更新日期：2014-08-21 00:00:00
abstract：BACKGROUND:Maize landraces from South America have traditionally been assigned to two main categories: Andean and Tropical Lowland germplasm. However, the genetic structure and affiliations of the lowland gene pools have been difficult to assess due to limited sampling and the lack of comparative analysis. Here, we exa...
journal_title：BMC plant biology
pub_type： 杂志文章
doi：10.1186/s12870-016-0874-5
更新日期：2016-08-26 00:00:00
abstract：BACKGROUND:Hordeum chilense, a native South American diploid wild barley, is one of the species of the genus Hordeum with a high potential for cereal breeding purposes, given its high crossability with other members of the Triticeae tribe. Hexaploid tritordeum (×Tritordeum Ascherson et Graebner, 2n=6×=42, AABBH(ch)H(ch...
journal_title：BMC plant biology
pub_type： 杂志文章
doi：10.1186/1471-2229-13-87
更新日期：2013-06-03 00:00:00
abstract：BACKGROUND:ANGUSTIFOLIA (AN), one of the CtBP family proteins, plays a major role in microtubule-dependent cell morphogenesis. Microarray analysis of mammalian AN homologs suggests that AN might function as a transcriptional activator and regulator of a wide range of genes. Genetic characterization of AN mutants sugges...
journal_title：BMC plant biology
pub_type： 杂志文章
doi：10.1186/1471-2229-13-79
更新日期：2013-05-14 00:00:00
abstract：BACKGROUND:Pseudomonas syringae pv. tabaci (Pst), which is the pathogen responsible for tobacco wildfire disease, has received considerable attention in recent years. The objective of this study was to clarify the responses of photosystem I (PSI) and photosystem II (PSII) to Pst infection in tobacco leaves. RESULTS:Th...
journal_title：BMC plant biology
pub_type： 杂志文章
doi：10.1186/s12870-016-0723-6
更新日期：2016-01-25 00:00:00
abstract：BACKGROUND:Soil salinity and alkalinity present a serious threat to global agriculture. However, most of the studies have focused on neutral salt stress, and the information on the metabolic responses of plants to alkaline salt stress is limited. This investigation aimed at determining the influence of neutral salt and...
journal_title：BMC plant biology
pub_type： 杂志文章
doi：10.1186/s12870-017-0994-6
更新日期：2017-02-10 00:00:00
abstract：BACKGROUND:Protein synthesis is a highly energy demanding process and is regulated according to cellular energy levels. Light and sugar availability affect mRNA translation in plant cells but the specific roles of these factors remain unclear. In this study, sucrose was applied to Arabidopsis seedlings kept in the ligh...
journal_title：BMC plant biology
pub_type： 杂志文章
doi：10.1186/s12870-014-0306-3
更新日期：2014-11-18 00:00:00
abstract：BACKGROUND:Cultivated peanut (Arachis hypogaea. L) is one of the most important oil crops in the world. After flowering, the peanut plant forms aboveground pegs (gynophores) that penetrate the soil, giving rise to underground pods. This means of reproduction, referred to as geocarpy, distinguishes peanuts from most oth...
journal_title：BMC plant biology
pub_type： 杂志文章
doi：10.1186/s12870-015-0582-6
更新日期：2015-08-04 00:00:00
abstract：BACKGROUND:Overuse of nitrogen fertilizers is often a major practice to ensure sufficient nitrogen demand of high-yielding rice, leading to persistent NH4+ excess in the plant. However, this excessive portion of nitrogen nutrient does not correspond to further increase in grain yields. For finding out the main constrai...
journal_title：BMC plant biology
pub_type： 杂志文章
doi：10.1186/s12870-020-02363-x
更新日期：2020-04-07 00:00:00
abstract：BACKGROUND:Bast fibres from the phloem tissues of flax are scientifically interesting and economically useful due in part to a dynamic system of secondary cell wall deposition. To better understand the molecular mechanisms underlying the process of cell wall development in flax, we extracted proteins from individually ...
journal_title：BMC plant biology
pub_type： 杂志文章
doi：10.1186/1471-2229-8-52
更新日期：2008-04-30 00:00:00
abstract：BACKGROUND:Genetic manipulation of brassinosteroid (BR) biosynthesis or signaling is a promising strategy to improve crop yield and quality. However, the relationships between the BR-promoted growth and photosynthesis and the exact mechanism of BR-regulated photosynthetic capacity are not clear. Here, we generated tran...
journal_title：BMC plant biology
pub_type： 杂志文章
doi：10.1186/s12870-016-0715-6
更新日期：2016-01-28 00:00:00
abstract：BACKGROUND:Individual plants adapt to their immediate environment using a combination of biochemical, morphological and life cycle strategies. Because woody plants are long-lived perennials, they cannot rely on annual life cycle strategies alone to survive abiotic stresses. In this study we used suppression subtractive...
journal_title：BMC plant biology
pub_type： 杂志文章
doi：10.1186/1471-2229-14-182
更新日期：2014-07-08 00:00:00
