Negative phototropism is seen in Arabidopsis inflorescences when auxin signaling is reduced to a minimal level by anAux/IAAdominant mutation,axr2

Use of transcriptomics and co-expression networks to analyze the interconnections between nitrogen assimilation and photorespiratory metabolism

“…While none of these factors has been characterized in L. japonicus , some interesting information can be obtained by searching for their orthologous genes in Arabidopsis. Probesets chr1.CM0088.102 and chr1.CM0375.38 are orthologs to the Arabidopsis transcription factors ATML1, a HUA-like transcription factor family member, and to AXR2, respectively, all of them involved in embryo and shoot development ( Takada et al , 2013 ; Jali et al , 2014 ; Sato et al , 2015 ). Two NAC transcription factors (probesets Ljwgs_045720.1 and Ljwgs_055404.1) correspond to Arabidopsis VNI2 and NTL9, which regulate leaf longevity and senescence ( Yoon et al , 2008 ; Yang et al , 2011 ).…”

“…Finally, it was also found that another four transcription factors were connected to several photorespiratory genes as well as to NO 3 − transporters and to an asparagine synthetase (probesets Ljwgs_033155.1_at and Ljwgs_147347.1_s_at), and also to one NH 4 + transporter (chr1.CM0375.38_at and chr5.CM0052.19_at). chr1.CM0375.38_at is a transcription factor whose ortholog gene in Arabidopsis (AXR2, At3g23050) is involved in embryo and shoot development ( Sato et al , 2015 ). The probesets chr5.CM0052.19_at and Ljwgs_033155.1_at encode an ERF and a bHLH factor, respectively, whose orthologous genes in Arabidopsis (At5g64750 and At1g32640, respectively) are involved in the response to abscisic acid and abiotic stress ( Pandey et al , 2005 ; De Ollas et al , 2015 ).…”

Exploring DNA variant segregation types in pooled genome sequencing enables effective mapping of weeping trait in Malus

“…Among the five or six DEGs in the W2 region, the AUX/IAA7.1 -like gene G102554 (MD10G1192900) appeared to fit well the role of W2 . Several characterized AUX/IAA like genes in Arabidopsis were shown to act as a repressor of auxin-inducible gene expression and to play roles in the control of gravitropic growth and development in light-grown seedlings ( Yu et al , 2013 ; Sato et al , 2014 , 2015 ).…”

Differential UVR8 Signal across the Stem Controls UV-B–Induced Inflorescence Phototropism

“…Beyond the seedling stage, both phototropins regulate phototropism in inflorescence stems in blue light (Christie, 2007;Kagawa et al, 2009). Examination of heliotropism has led to the suggestion of the involvement of plant hormones in the orientation of sunflower buds (Atamian et al, 2016) and an important role for correct auxin signaling (Sato et al, 2015). These findings suggest some degree of conservation regarding auxin dependence of tropisms at various stages of development.…”