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On the role of the tricarboxylic acid cycle in plant productivity

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Journal of Integrative Plant Biology 2018年第12期60卷 1199-1216页

作者： Youjun Zhang alisdair.r.fer.ie Max-Planck-lnstitute of Molecular Plant Physiology Am Muhlenberg 114476 Potsdam-GolmGermany Center of Plant System Biology and Biotechnology 4000 PlovdivBulgaria

The tricarboxylic acid(TCA) cycle is one of the canonical energy pathways of living systems, as well as being an example of a pathway in which dynamic enzyme assemblies, or metabolons, are well characterized. The role of the enzymes have been the subject of saturated transgenesis approaches, whereby the expression of the constituent enzymes were reduced or knocked out in order to ascertain their in vivo *** of the resultant plants exhibited improved photosynthesis and plant growth, under controlled greenhouse conditions. In addition, overexpression of the endogenous genes, or heterologous forms of a number of the enzymes, has been carried out in tomato fruit and the roots of a range of species, and in some instances improvement in fruit yield and postharvest properties and plant performance, under nutrient limitation, have been reported, respectively. Given a number of variants, in nature, we discuss possible synthetic approaches involving introducing these variants, or at least a subset of them, into plants. We additionally discuss the likely consequences of introducing synthetic metabolons, wherein certain pairs of reactions are artificially permanently assembled into plants, and speculate as to future strategies to further improve plant productivity by manipulation of the core metabolic pathway.

关键词： On the role of the tricarboxylic acid cycle in plant productivity TCA cycle

Metabolons,enzyme-enzyme assemblies that mediate substrate channeling,and their roles in plant metabolism

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Plant Communications 2021年第1期2卷 13-28页

作者： Youjun Zhang alisdair.r.fer.ie Center of Plant Systems Biology and Biotechnology 4000 PlovdivBulgaria Max-Planck-Institut für Molekulare Pflanzenphysiologie Am Mühlenberg 114476 Potsdam-GolmGermany

Metabolons are transientmulti-protein complexes of sequential enzymes that mediate substrate *** differ from multi-enzyme complexes in that they are dynamic,rather than permanent,and as such have considerably lower dissociation *** the fact that a huge number of metabolons have been suggested to exist in plants,most of these claims are erroneous as only a handful of these have been proven to *** believe that physical protein-protein interactions between consecutive enzymes of a pathway should rather be called enzyme-enzyme *** this review,we describe how metabolons are generally assembled by transient interactions and held together by both structural elements and non-covalent *** evidence for their existence comes fromprotein-protein interaction studies,which indicate that the enzymes physically interact,and direct substrate channelingmeasurements,which indicate that they functionally ***,advances in cell biology and proteomics have far outstripped those in classical enzymology and flux measurements,rendering most reports reliant purely on interactome *** developments in co-fractionation mass spectrometry will likely further exacerbate this *** this,only dynamic enzyme-enzyme assemblies in which both physical and functional interactions have been demonstrated should be termed *** discuss the level of evidence for the manifold plant pathways that have been postulated to contain metabolons and then list examples in both primary and secondary metabolism for which strong evidence has been provided to support these *** doing so,we pay particular attention to experimental and mathematical approaches to study metabolons as well as complexities that arise in attempting to follow ***,we discuss perspectives for improving our understanding of these fascinating but enigmatic interactions.

关键词： protein-protein interaction metabolon substrate channeling

At Long Last： Evidence for Pexophagy in Plants

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Molecular Plant 2014年第8期7卷 1257-1260页

作者： Tamar Avin-Wittenberg alisdair.r. fer.ie Max-Planck-Institute of Molecular Plant Physiology Am Mühlenberg 1 14476 Potsdam-Golm Germany

Peroxisomes are highly dynamic single-membrane-bound eukaryotic organelles displaying great variability in enzymatic content （Platta and Erdmann, 2007）. Plant peroxisomes function in a plethora of crucial development and stress ameliorating processes. Among the functions of plant peroxisomes are 13-oxidation of fatty acids, phytohormone production, participation in photorespiration, the glyoxyalte cycle, detoxification processes, and signal molecule generation （Hu et al., 2012）.

关键词： PLANT cell microbodies AUTOPHAGIC vacuoles PLANT proteins PLANT organelles PLANT vacuoles SEEDS -- Growth

Targeting Key Genes to Tailor Old and New Crops for a Greener Agriculture

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Molecular Plant 2020年第3期13卷 354-356页

作者： alisdair.r.fer.ie Jianbing Yan Department of Molecular Physiology Max-Planck-lnstitute of Molecular Plant PhysiologyAm Muhlenberg 114476 PotsdamGermany National Key Laboratory of Crop Genetic Improvement Huazhong Agricultural UniversityWuhan 430070China

Growing crops closer to the consumer is one of many approaches proposed to lessen the environmental footprint associated with food production(Banerjee and Adenauer,2014).This is complicated by an increasingly urban population,the lack of available land in cities and the consequent need for rapid crop *** these constraints,to date only lettuce and related leafy greens are currently cultivated at scale in urban farms(Touliatos et al.,2016).In recent years,there are increasing interests in the urban agriculture of fruits and berries,since controlled automated vertical farming systems offer the twin advantages of optimizing land use and the ease with which they can be designed to be more environmentally friendly and sustainable than traditional ***,a considerable challenge is that commercial crop varieties were historically,and still are,bred to be high yielding under typical field and greenhouse ***,given the perishable nature of fruits and berries,a reduced distance from farm to fork renders the shelf-life trait(and its associated detrimental effects on fruit quality)less ***,the possibility to improve fruit and berry quality traits is a particularly attractive aspect of urban *** addition,the environmental benefit for these species is perhaps even greater than for other crops,since they are more often transported by air.A recent study uses multi-site CrISPr/Cas9-mediated genome editing to restructure vine line tomato plants into compact early-yielding plants suitable for urban agriculture(Figure 1),while demonstrating that a single gene editing strategy can produce a compact stature in the related plant groundcherry(Kwon et al.,2019).

关键词： crops yielding Figure

Phylogenomic discovery of deleterious mutants completes the potato breeding revolution

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Molecular Plant 2023年第7期16卷 1103-1105页

作者： alisdair.r.fer.ie Saleh Alseekh Max-Planck-lnstitute of Molecular Plant Physiology Am Muhlenberg 114476 Potsdam-GolmGermany Center for Plant Systems Biology and Biotechnology 4000 PlovdivBulgaria

After many decades of attempts,recent years have finally witnessed the reinvention of potato from a clonally propagated autotetraploid to a seed-propagated inbred line-based diploid hybrid(Zhang et al.,2021).This can be anticipated to accelerate potato breeding from a cumbersome,non-accumulative mode to a rapid iterative one(Wu et al.,2023).That said,a major hurdle in achieving this is the fact that the clonally propagated potato has amassed a huge number of deleterious mutations(Zhang et al.,2019).These mutations are at least partially masked in the heterozygous state,but their detrimental effects are exposed during the process of developing inbred lines,rendering this a considerable *** Zhang et al.(2021)previously developed two inbred lines,the first generation of highly homozygous inbred lines,these contained mutations that collectively resulted in negative fitness manifesting in frail growth,reduced fertility,and low *** a recent study,Wu et al.(2023)utilized genomic evolutionary rate profiling(GErP)analysis to identify and quantify deleterious mutations at the genome-wide scale.

关键词： breeding fertility collective

Ancestral genome reconstruction for studies of the green lineage

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Molecular Plant 2023年第4期16卷 657-659页

作者： Marek Mutwil alisdair.r.fer.ie School of Biological Sciences Nanyang Technological University60 Nanyang DriveSingapore 637551Singapore Max-Planck-Institute of Molecular Plant Physiology Am Muhlenberg 114476 Potsdam-GolmGermany

Ancestral sequence reconstruction has become a fundamental aspect of molecular evolution studies being used to trace small-scale sequence modifications through the course of the evolution of *** first proposed in the 1960s(Zuckerkandl and Pauling,1965),it is much more recently that this discipline has attained *** studies were carried out in bacterial,followed by mammalian,systems,but more recently,the approach has additionally been used in plant studies,particularly those focused on the evolution of metabolism(Scossa and fer.ie,2021).

关键词： Pauling species. attain

Specialized Metabolites of the Flavonol Class Mediate root Phototropism and Growth

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Molecular Plant 2016年第12期9卷 1554-1555页

作者： Takayuki Tohge, alisdair.r. fer.ie Max-Planck-Institute of Molecular Plant Physiology Am Mühlenberg 1 14476 Potsdam-Golm Germany

roots are subterranean organs and normally follow the gravity vector to grow downward. However, in nature, roots can be exposed to sunlight in a negative phototropism response termed root light avoidance （Kutschera and Briggs, 2012）. Such tropic responses are characterized by organ curvature caused by asymmetric growth between different sides of the root, which generally correlates with an asymmetric distribution of the plant hormone auxin （Wang et al., 2015）.

关键词： Conserved Interaction recruiting

Doubled haploid technology and synthetic apomixis:recent advances and applications in future crop breeding

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Molecular Plant 2024年第7期17卷 1005-1018页

作者： Yanzhi Qu alisdair.r.fer.ie Jie Liu Jianbing Yan National Key Laboratory of Crop Genetic Improvement Huazhong Agricultural UniversityWuhan 430070China Hubei Hongshan Laboratory Wuhan 430070China Department of Molecular Physiology Max-Planck-Institute of Molecular Plant Physiology14476 Potsdam-GolmGermany Center of Plant Systems Biology and Biotechnology 4000 PlovdivBulgaria azhouwan National Laboratory Sanya 572024China

Doubled haploid(DH)technology and synthetic apomixis approaches can considerably shorten breeding cycles and enhance breeding *** with traditional breeding methods,DH technology offers the advantage of rapidly generating inbred lines,while synthetic apomixis can effectively fix hybrid *** this review,we focus on(i)recent advances in identifying and characterizing genes responsible for haploid induction(Hl),(ii)the molecular mechanisms of Hl,(ili)spontaneous haploid genome doubling,and(iv)crop synthetic *** also discuss the challenges and potential solutions for future crop breeding programs utilizing DH technology and synthetic ***,we provide our perspectives about how to integrate DH and synthetic apomixis for precision breeding and de novo domestication.

关键词： maize doubled haploid technology haploid induction synthetic apomixis precision breeding

The genomes of Taxus species unveil novel candidates in the biosynthesis of taxoids

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Molecular Plant 2021年第11期14卷 1773-1775页

作者： Youjun Zhang Federico Scossa alisdair.r.fer.ie Center of Plant Systems Biology and Biotechnology 4000 PlovdivBulgaria Max-Planck-lnstitut fur Molekulare Pflanzenphysiologie Am Muhlenberg 114476 Potsdam-GolmGermany research Center for Genomics and Bioinformatics(CrEA-GB) Via Ardeatina 54600178 RomeItaly

Taxaceae is the yew family of conifers and includes evergreen trees and small shrubs mainly distributed in Eurasia and North *** genus of Taxus has attracted considerable attention since Monroe *** and Mansukh *** firstly isolated and characterized an unusual cyclic diterpenoid from the bark of the Pacific yew tree(Wani et al.,1971).This compound,subsequently called paclitaxel,was shown to promote tubulin assembly into microtubules,preventing their ***,paclitaxel was approved for medical use against ovarian cancer in 1992(Fischer and Ganellin,2010).

关键词： unusual Monro compound