GEO DataSets

(Submitter supplied) Zea mays is a C4 plant that utilizes two distinct cell types, mesophyll (M) and bundle sheath (BS), to cooperatively fix carbon. Regulation of M and BS cell differentiation is poorly understood. Here, we explore the transcriptional networks of M and BS cells by microarray analysis. The maize mutant bundle sheath defective2 lacks the accumulation of Rubisco small and large subunits (Roth et al 1996; Brutnell et al 1999) and cannot perform the Calvin Cycle (Smith et al 1998). more...

Organism:

Zea mays

Type:

Expression profiling by array

Platforms:

GPL5439 GPL5440

24 Samples

Download data

(Submitter supplied) Maize earshoot is a metabolic sink espcially related to nitrogen metabolism. Studies on the transcriptomic and metabolic changes occuring in earshoot can provide interesting answers about the nitrogen metabolic potential of the maize variety under study. Intermated B73 X Mo17 recombinant inbred lines (IBMRIL) belong to a predominantly used mapping population. Illinois high protein (IHP) line is a metabolic extreme with respect to nitrogen mebolism with around 30% seed protein. more...

Organism:

Zea mays

Type:

Expression profiling by array

Platforms:

GPL5439 GPL5440

32 Samples

Download data: GPR

(Submitter supplied) Illinois protein lines (IPL) comprise lines known as Illinois high protein (IHP), Illinois low protein (ILP), Illinois reverse-low protein (IRLP) and Illinois reverse-high protein (IRHP) lines. These lines represent over a century old experiment containing lines that represent various levels of nitrogen metabolism potential as a function of their grain protein concentration. Microarray experiment was conducted using 16 DAP seeds from the above mentioned four IPLs. more...

Organism:

Zea mays

Type:

Expression profiling by array

Platforms:

GPL5439 GPL5440

26 Samples

Download data: GPR

(Submitter supplied) Maize earshoot is a metabolic sink espcially related to nitrogen metabolism. Studies on the transcriptomic and metabolic changes occuring in earshoot can provide interesting answers about the nitrogen metabolic potential of the maize variety under study. B73 X Mo17 is a model maize hybrid. Developing earshoots from this genotype grown at nitrogen-deficient and nitrogen-sufficient conditions were sampled, processed and analyzed through microarray technology.

Organism:

Zea mays

Type:

Expression profiling by array

Platforms:

GPL5440 GPL5439

16 Samples

Download data: GPR

(Submitter supplied) In this study we used non-targeted molecular profiling to provide insight into the extent of variation in the maize transcriptome, proteome and metabolome by analyzing replicas of two genetically modified and one isogenic maize genotype.

Organism:

Zea mays

Type:

Expression profiling by array

Platforms:

GPL5439 GPL5440

36 Samples

Download data: TXT

(Submitter supplied) Genotype and nitrogen-dosage effect on maize leaves collected at V8 leaf stage B73 is a model maize genotype while Illinois high protein line (IHP) is a metabolic extreme selected for higher grain protein concentration. It is a well known fact that the leaves serve as source and earshoot as a sink. Microarray analysis of V8 leaf collected from B73 and IHP genotypes grown at vairable nitrogen applications. more...

Organism:

Zea mays

Type:

Expression profiling by array

Platforms:

GPL5440 GPL5439

37 Samples

Download data: GPR

(Submitter supplied) Tropical maize genotypes are well known for their traits of late flowering and higher biomass. Carbon/Nitrogen balance in these genotypes is significantly different from temperate genotypes. Microarray analysis of gene expression changes occuring in developing earshoots was done and results were compared with the temperate genotype microarray analysis, previously conducted. A low yielding variety was used as a reference against three high yielding varities. more...

Organism:

Zea mays

Type:

Expression profiling by array

Platforms:

GPL5439 GPL5440

24 Samples

Download data: GPR

(Submitter supplied) Genotype dependent gene expression changes in the leaves of Illinois protein lines at 8 days after pollination (DAP). Illinois protein lines (IPL) comprise lines known as Illinois high protein (IHP), Illinois low protein (ILP), Illinois reverse-low protein (IRLP) and Illinois reverse-high protein (IRHP) lines. These lines represent over a century old experiment containing lines that represent various levels of nitrogen metabolism potential as a function of their grain protein concentration. more...

Organism:

Zea mays

Type:

Expression profiling by array

Platforms:

GPL5440 GPL5439

22 Samples

Download data: GPR

(Submitter supplied) All plants used in this study were derived from the IBM 94 (Lee, Sharopova et al. 2002) mapping population and names used in the MIAME information correspond to Stapleton laboratory names. A conversion table identifying the official IBM names is presented below. Maize IBM94 seed was supplied by the Maize Coop and increased at the field nursery in Clayton, NC. For sowing, twelve seeds were placed in six-pack pots filled with sterilized vermiculite. more...

Organism:

Zea mays

Type:

Expression profiling by array

Platforms:

GPL5439 GPL5440

108 Samples

Download data: GPR

(Submitter supplied) Maize kernel is an important source of food, feed and industrial raw materials. The illustration of the molecular mechanisms of maize kernel development will be helpful for the manipulation of maize improvements. Although a great many researches based on molecular biology and gecetics have greatly increased our understanding on the kernel development, many of the mechanisms controlling this important process remain elusive. more...

Organism:

Zea mays

Type:

Expression profiling by array

Platforms:

GPL5440 GPL5439

24 Samples

Download data

(Submitter supplied) Periods of soil water deficit could occur at any time during the crop season, but maize is particularly sensitive to water stress around flowering time. At this time the stress usually causes remarkable yield loss. Heading time, which is just before tassel flowering, is one of the most important stages that maize productivity would be affected severely if plants encounter water stress. The whole-genomic gene expression changes of maize plants in response to water deficit stress at this stage have not been studied. more...

Organism:

Zea mays

Type:

Expression profiling by array

Platforms:

GPL5439 GPL5440

8 Samples

Download data: GPR

(Submitter supplied) During Zea mays (maize) C4 differentiation, mesophyll (M) and bundle sheath (BS) cells accumulate distinct sets of photosynthetic enzymes, with very low photosystem II (PSII) content in BS chloroplasts. Consequently, there is little linear electron transport in the BS and ATP is generated by cyclic electron flow. In contrast, M thylakoids are very similar to those of C3 plants and produce the ATP and NADPH that drive metabolic activities. more...

Organism:

Zea mays

Type:

Expression profiling by array

Platforms:

GPL5440 GPL5439

24 Samples

Download data: TXT