IMPROVED PRODUCTIVITY AND BIOPRODUCT FORMATION IN PHOTOTROPIN KNOCK/OUT MUTANTS IN MICROALGAE
    1.
    发明申请
    IMPROVED PRODUCTIVITY AND BIOPRODUCT FORMATION IN PHOTOTROPIN KNOCK/OUT MUTANTS IN MICROALGAE 审中-公开
    在微藻中改善光合作用的生物量和生物量

    公开(公告)号:WO2016193959A2

    公开(公告)日:2016-12-08

    申请号:PCT/IB2016/054466

    申请日:2016-07-26

    IPC分类号: C12P19/04 C12N1/13

    摘要: Phototropin is a blue light receptor, which mediates a variety of blue-light elicited physiological processes in plants and algae. In higher plants these processes include phototropism, chloroplast movement and stomatal opening. In the green alga Chlamydomonas reinhardtii , phototropin plays a vital role in progression of the sexual life cycle and In the control of the eye spot size and light sensitivity Phototropin is also involved in blue-light mediated changes in the synthesis of chlorophylls, carotenoids, chlorophyll binding proteins. We compared the transcriptome of phototropin knock out (PHOT KO) mutant and wild-type parent to analyze differences in gene expression in high light grown cultures (500 μmol photons m -2 s -1 ). Our results indicate the up-regulation of genes involved in photosynthetic electron transport chain, carbon fixation pathway, starch, lipid, and cell cycle control genes. With respect to photosynthetic electron transport genes, genes encoding proteins of the cytochrome b6f and ATP synthase complex were up regulated potentially facilitating proton-coupled electron transfer. In addition genes involved in limiting steps in the Calvin cycle Ribulose-1,5-blsphosphate carboxylase/oxygenase (RuBisCO), Sidoheptulose 1,7 bisphosphatase (SBPase), Glyceraldehyde-3- phosphate dehydrogenase (3PGDH) and that mediate cell-cycle control (CDK) were also up regulated along with starch synthase and fatty acid biosynthesis genes involved in starch and lipid synthesis, in addition, transmission electron micrographs show increased accumulation of starch granules in PHOT mutant compared to wild type, which is consistent with the higher expression of starch synthase genes. Collectively, the altered patterns of gene expression in the PHOT mutants were associated with a two-fold increase in growth and biomass accumulation compared to wild type when grown in environmental photobioreactors (Phenometrics) that simulate a pond environment. In conclusion, our studies suggest that phototropin may be a master gene regulator that suppresses rapid cell growth and promotes gametogenesis and sexual recombination in wild type strains.

    摘要翻译: 光吗啉是蓝光受体,其介导植物和藻类中各种蓝光引发的生理过程。 在高等植物中,这些过程包括光转动,叶绿体运动和气孔开放。 在绿藻藻衣藻中,光滑石在性生活周期的进展中起着至关重要的作用,并且在眼睛斑点大小和光敏感性的控制中。光喜素也参与蓝光介导的叶绿素,类胡萝卜素,叶绿素合成的变化 结合蛋白。 我们比较了光诱导敲除(PHOT KO)突变体和野生型亲本的转录组,以分析高光生长培养物(500μmol光子m-2s-1)中基因表达的差异。 我们的结果表明参与光合电子传递链,碳固定途径,淀粉,脂质和细胞周期控制基因的基因的上调。 对于光合电子转运基因,编码细胞色素b6f和ATP合成酶复合物蛋白质的基因上调可能促进质子 - 偶联电子转移。 此外,参与限制加尔文周期中的步骤的基因Ribulose-1,5-blsphosphate羧化酶/加氧酶(RuBisCO),Sidoheptulose 1,7二磷酸酶(SBPase),甘油醛-3-磷酸脱氢酶(3PGDH),并介导细胞周期控制 (CDK)也与淀粉合成酶和脂肪酸生物合成基因参与淀粉和脂质合成相关,此外,透射电子显微照片显示,与野生型相比,透明电子显微照片显示淀粉颗粒在PHOT突变体中的积累增加,这与更高的表达一致 的淀粉合成酶基因。 总之,在模拟池塘环境的环境光生物反应器(Phenometrics)中生长时,与野生型相比,PHOT突变体中基因表达的改变模式与生长和生物量积累相比增加了两倍。 总之,我们的研究表明光滑素可能是一个主要的基因调节器,抑制快速的细胞生长和促进野生型菌株的配子形成和性重组。

    METHOD FOR DEDIFFERENTIATING AND CULTURING MICROBIAL SPECIES
    2.
    发明申请
    METHOD FOR DEDIFFERENTIATING AND CULTURING MICROBIAL SPECIES 审中-公开
    降解和培养微生物的方法

    公开(公告)号:WO2016187607A1

    公开(公告)日:2016-11-24

    申请号:PCT/US2016/033705

    申请日:2016-05-23

    发明人: EPSTEIN, Slava

    IPC分类号: C12Q1/02 C12N5/00

    摘要: Methods and devices useful for reprogramming microbial cells to grow under different culture conditions are provided. The methods and devices can be used to prepare cultures of new, previously uncharacterized microbial species and for identifying laboratory conditions to culture, propagate, and study microbes that do not grow under standard laboratory conditions. The invention is also useful for characterizing microbiota, such as the communities of microorganisms inhabiting the human body and natural environments such as soil.

    摘要翻译: 提供了可用于在不同培养条件下重编程微生物细胞生长的方法和装置。 该方法和装置可用于制备新的先前未表征的微生物物种的培养物,并用于鉴定培养,繁殖和研究在标准实验室条件下不生长的微生物的实验室条件。 本发明还可用于表征微生物群,例如居住在人体中的微生物群落和诸如土壤的自然环境。

    RESTORATION OF MALE FERTILITY IN WHEAT
    5.
    发明申请
    RESTORATION OF MALE FERTILITY IN WHEAT 审中-公开
    恢复小麦雄性不育

    公开(公告)号:WO2016100309A1

    公开(公告)日:2016-06-23

    申请号:PCT/US2015/065768

    申请日:2015-12-15

    IPC分类号: C12N15/82 C07K14/415 A01H5/10

    摘要: Manipulation of male fertility in a polyploid species requires attention to the interaction of male-fertility alleles of multiple genomes. In hexaploid wheat, single-genome heterozygotes for Ms26 provide differential levels of male fertility across genomes. Hexaploid wheat homozygous for mutations in the Ms26 gene on the A, B, and D genomes is male-sterile. Male fertility may be restored by sufficient levels of expression of Ms26 using native Ms26 or a transgene, which may be native to wheat or to another species, or a combination of native and transgenic alleles. CRISPR/Cas9 technology may be used to generate mutations in Ms26 in wheat or rice.

    摘要翻译: 在多倍体物种中操纵雄性生殖力需要注意多个基因组的雄性等位基因的相互作用。 在六倍体小麦中,Ms26的单基因组杂合子在基因组上提供了不同程度的雄性生育力。 在A,B和D基因组中Ms26基因突变的纯合子的六倍体小麦是雄性不育的。 通过使用天然Ms26或可以是小麦或其他物种天然的转基因或天然转基因等位基因的组合的足够水平的Ms26的表达可以恢复雄性生育力。 CRISPR / Cas9技术可用于在小麦或稻米中产生Ms26突变。

    METHOD OF IMPROVING SOLVENT TOLERANCE IN MICROBES
    6.
    发明申请
    METHOD OF IMPROVING SOLVENT TOLERANCE IN MICROBES 审中-公开
    改善微生物溶剂耐性的方法

    公开(公告)号:WO2016028232A1

    公开(公告)日:2016-02-25

    申请号:PCT/SG2015/050272

    申请日:2015-08-21

    IPC分类号: C12P7/16

    摘要: The invention relates generally to a method of improving solvent tolerance in microbes, and in particular, to a method of improving bio-butanol titre in a fermentation process due to improved solvent tolerance in microbes. The method of improving butanol titre in a fermentation process involves the addition of a membrane insertion molecule comprising a conjugated oligoelectrolyte, particularly an oligo-polyphenylene vinylene conjugated oligoelectrolyte.

    摘要翻译: 本发明一般涉及一种提高微生物溶剂耐受性的方法,特别涉及一种改善发酵过程中生物丁醇滴度的方法,因为微生物中耐溶剂性能得到改善。 在发酵过程中提高丁醇滴度的方法包括加入包含共轭低聚电解质,特别是低聚 - 聚亚苯基亚乙烯基共轭寡聚电解质的膜插入分子。

    緑藻の脂質蓄積変異体およびその利用
    10.
    发明申请
    緑藻の脂質蓄積変異体およびその利用 审中-公开
    绿藻的脂肪蓄积突变体及其用途

    公开(公告)号:WO2015075881A1

    公开(公告)日:2015-05-28

    申请号:PCT/JP2014/005594

    申请日:2014-11-07

    IPC分类号: C12N1/12 C12N15/09 C12P7/64

    摘要:  親株に比べて低下した二重特異性チロシンリン酸化制御プロテインキナーゼ活性を有する緑藻変異体が提供される。緑藻変異体は、単位時間及び単位培養面積当たりの脂質生産量が親株よりも増加している。前記二重特異性チロシンリン酸化制御プロテインキナーゼは配列番号4に示す活性部位及び基質認識部位のアミノ酸配列と少なくとも50%の配列同一性を有するアミノ酸配列を有し、且つ二重特異性チロシンリン酸化制御プロテインキナーゼ活性を有するタンパク質である。

    摘要翻译: 提供的是具有比亲本菌株低的双特异性酪氨酸磷酸化调节的蛋白激酶活性的绿藻突变体。 绿藻突变体增加单位时间和单位培养面积产生的脂质量超过亲本菌株的产生量。 这种双特异性酪氨酸磷酸化调节蛋白激酶是具有与SEQ ID NO:4所示的活性位点和底物识别位点上的氨基酸序列具有至少50%序列同一性的氨基酸序列的蛋白质,并且具有 双特异性酪氨酸磷酸化调节蛋白激酶活性。