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1. Characterization of l-aspartate oxidase from Arabidopsis thaliana

Author:
Hao, Jingfang; Pétriacq, Pierre; de Bont, Linda; Hodges, Michael; Gakière, Bertrand
Source:
Plant science 2018 v.271 pp. 133-142
ISSN:
0168-9452
Subject:
Arabidopsis thaliana; Escherichia coli; NAD (coenzyme); apoproteins; aspartic acid; biochemical pathways; complementary DNA; enzyme activity; flavoproteins; gene expression; homeostasis; models; pH; pyridines; temperature
Abstract:
... The flavoprotein l-aspartate oxidase (LASPO) is the first enzyme of the de novo biosynthetic pathway of NAD+ in plants. Although LASPO is considered pivotal to maintain NAD+ homeostasis, it has not been hitherto characterized in plants. Here, the cDNA encoding the LASPO from the model plant Arabidopsis thaliana (AtLASPO, At5g14760) has been cloned and expressed in Escherichia coli for subsequent e ...
DOI:
10.1016/j.plantsci.2018.03.016

2. Relation between hypericin content and morphometric leaf parameters in Hypericum spp.: A case of cubic degree polynomial function

Author:
Kimáková, Katarína; Petijová, Linda; Bruňáková, Katarína; Čellárová, Eva
Source:
Plant science 2018 v.271 pp. 94-99
ISSN:
0168-9452
Subject:
Hypericum; aerial parts; cell culture; diploidy; hypericin; leaf morphology; leaves; models; morphometry; phototoxicity; regression analysis; secondary metabolites
Abstract:
... Higher plants often accumulate secondary metabolites in multicellular structures or in secretory reservoirs. Biotechnological production of such compounds by cell cultures lacking proper morphological structures is difficult, therefore possibilities for an efficient increase of their formation by organ cultures are being searched. The genus Hypericum comprises many species that store photoactive a ...
DOI:
10.1016/j.plantsci.2018.03.019

3. Temperature variation caused by sowing dates significantly affects floral initiation and floral bud differentiation processes in rapeseed (Brassica napus L.)

Author:
Luo, Tao; Zhang, Jing; Khan, Mohammad Nauman; Liu, Jiahuan; Xu, Zhenghua; Hu, Liyong
Source:
Plant science 2018 v.271 pp. 40-51
ISSN:
0168-9452
Subject:
Brassica napus; apical meristems; branches; buds; cold treatment; crop yield; equations; flowering; genotype; growing season; heat sums; leaf primordia; models; photoperiod; racemes; rapeseed; sowing date; temperature; vegetative growth; vernalization
Abstract:
... To understand the influence of temperature on floral initiation and to reveal the relationship between floral bud development and yield potential of rapeseed (Brassica napus L.), early- (“1358”), intermediate- (“Zhongshuang No.11”) and late- (“Zheshuang No.8”) maturity genotypes were sown on different sowing dates under field conditions during four crop seasons. A multiplicative model was introduc ...
DOI:
10.1016/j.plantsci.2018.03.004