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Gui Fang-Fang,Jiang Ge-Ge,Bin Dong,Zhong Shi-Wei,Xiao Zheng,Qiu Fang,Wang Yi-Guang,Yang Li-Yuan,Zhao Hongbo 한국유전학회 2023 Genes & Genomics Vol.45 No.9
Background MIKC type MADS-box transcription factors are one of the largest gene families and play a pivotal role in flowering time and flower development. Chimonanthus salicifolius belongs to the family Calycanthaceae and has a unique flowering time and flowering morphology compared to other Chimonanthus species, but the research on MIKC type MADS-box gene family of C. salicifolius has not been reported. Objective Identification, comprehensive bioinformatic analysis, the expression pattern of MIKC-type MADS-box gene family from different tissues of C. salicifolius. Methods Genome-wide investigation and expression pattern under different tissues of the MIKC-type MADS-box gene family in C. salicifolius, and their phylogenetic relationships, evolutionary characteristics, gene structure, motif distribution, promoter cis-acting element were performed. Results A total of 29 MIKC-type MADS-box genes were identified from the whole genome sequencing. Interspecies synteny analysis revealed more significant collinearity between C. salicifolius and the magnoliids species compared to eudicots and monocots. MIKC-type MADS-box genes from the same subfamily share similar distribution patterns, gene structure, and expression patterns. Compared with Arabidopsis thaliana, Nymphaea colorata, and Chimonanthus praecox, the FLC genes were absent in C. salicifolius, while the AGL6 subfamily was expanded in C. salicifolius. The selectively expanded promoter (AGL6) and lack of repressor (FLC) genes may explain the earlier flowering in C. salicifolius. The loss of the AP3 homologous gene in C. salicifolius is probably the primary cause of the morphological distinction between C. salicifolius and C. praecox. The csAGL6a gene is specifically expressed in the flowering process and indicates the potential function of promoting flowering. Conclusion This study offers a genome-wide identification and expression profiling of the MIKC-types MADS-box genes in the C. salicifolius, and establishes the foundation for screening flowering development genes and understanding the potential function of the MIKC-types MADS-box genes in the C. salicifolius.
A NONLINEAR LIOUVILLE THEOREM IN HALF SPACE
ZHONG BO FANG,MINKYU KWAK 한국산업응용수학회 2006 Journal of the Korean Society for Industrial and A Vol.10 No.1
We prove a Liouville theorem of a semilinear elliptic equation: △u+f(xn, u)=0 defined in half space with zero boundary data, here n>2, f satisfies suitable conditions. In fact we show that if u is a nonnegative classical solution, then u becomes identically zero. The result was proved by using the moving plane method and by investigating an ordinary differential equation.
NEW CHARACTERIZATIONS OF COMPOSITION OPERATORS BETWEEN BLOCH TYPE SPACES IN THE UNIT BALL
Fang, Zhong-Shan,Zhou, Ze-Hua Korean Mathematical Society 2015 대한수학회보 Vol.52 No.3
In this paper, we give new characterizations of the boundedness and compactness of composition operators $C_{\varphi}$ between Bloch type spaces in the unit ball $\mathbb{B}^n$, in terms of the power of the components of ${\varphi}$, where ${\varphi}$ is a holomorphic self-map of $\mathbb{B}^n$.
AN ALGORITHM ABOUT LOGIC FUNCTION SIMPLIFICATION
Zhong, Fang Jian 대한전자공학회 1992 HICEC:Harbin International Conference on Electroni Vol.1 No.1
This paper shows an available method about how to simplify a logic function, which is named F-algorithm. It has been demonstrated on its equal transformation and its simplest expression. This algorithm has been turned into reality in Turbo Pascal.
Negatively bounded solutions for a parabolic partial differential equation
Zhong Bo Fang,곽민규 대한수학회 2005 대한수학회보 Vol.42 No.4
In this note, we introduce a new proof of the uniqueness and existence of a negatively bounded solution for a parabolic partial differential equation. The uniqueness in particular implies the finiteness of the Fourier spanning dimension of the global attractor and the existence allows a construction of an inertial manifold.
A VERY SINGULAR SOLUTION OF A DOUBLY DEGENERATE PARABOLIC EQUATION WITH NONLINEAR CONVECTION
Fang, Zhong Bo Korean Mathematical Society 2010 대한수학회지 Vol.47 No.4
We here investigate an existence and uniqueness of the nontrivial, nonnegative solution of a nonlinear ordinary differential equation: $$[\mid(w^m)]'\mid^{p-2}(w^m)']'\;+\;{\beta}rw'\;+\;{\alpha}w\;+\;(w^q)'\;=\;0$$ satisfying a specific decay rate: $lim_{r\rightarrow\infty}\;r^{\alpha/\beta}w(r)$ = 0 with $\alpha$ := (p - 1)/[pd-(m+1)(p-1)] and $\beta$:= [q-m(p-1)]/[pd-(m+1)(p-1)]. Here m(p-1) > 1 and m(p - 1) < q < (m+1)(p-1). Such a solution arises naturally when we study a very singular solution for a doubly degenerate equation with nonlinear convection: $$u_t\;=\;[\mid(u^m)_x\mid^{p-2}(u^m)_x]_x\;+\;(u^q)x$$ defined on the half line.
NEGATIVELY BOUNDED SOLUTIONS FOR A PARABOLIC PARTIAL DIFFERENTIAL EQUATION
FANG ZHONG BO,KWAK, MIN-KYU Korean Mathematical Society 2005 대한수학회보 Vol.42 No.4
In this note, we introduce a new proof of the unique-ness and existence of a negatively bounded solution for a parabolic partial differential equation. The uniqueness in particular implies the finiteness of the Fourier spanning dimension of the global attractor and the existence allows a construction of an inertial manifold.
A VERY SINGULAR SOLUTION OF A DOUBLY DEGENERATE PARABOLIC EQUATION WITH NONLINEAR CONVECTION
Zhong Bo Fang 대한수학회 2010 대한수학회지 Vol.47 No.4
We here investigate an existence and uniqueness of the nontrivial,nonnegative solution of a nonlinear ordinary differential equation:[수식]satisfying a specific decay rate: [수식]. Here [수식]. Such a solution arises naturally when we study a very singular solution for a doubly degenerate equation with nonlinear convection:[수식]defined on the half line.