scholarly journals Distinct C 4 sub‐types and C 3 bundle sheath isolation in the Paniceae grasses

Plant Direct ◽  
2021 ◽  
Vol 5 (12) ◽  
Author(s):  
Jacob D. Washburn ◽  
Josh Strable ◽  
Patrick Dickinson ◽  
Satya S. Kothapalli ◽  
Julia M. Brose ◽  
...  
Keyword(s):  
Bundle Sheath

scholarly journals Four Mutant Alleles Elucidate the Role of the G2 Protein in the Development of C4 and C3 Photosynthesizing Maize Tissues

Genetics ◽  
2001 ◽  
Vol 159 (2) ◽  
pp. 787-797
Author(s):  
Lizzie Cribb ◽  
Lisa N Hall ◽  
Jane A Langdale
Keyword(s):  
Cell Types ◽  
Bundle Sheath ◽  
Primary Role ◽  
Ribulose Bisphosphate Carboxylase ◽  
Sheath Cell ◽  
Mesophyll Cells ◽  
Phenotypic Data ◽  
Bisphosphate Carboxylase ◽  
Bundle Sheath Cell

Abstract Maize leaf blades differentiate dimorphic photosynthetic cell types, the bundle sheath and mesophyll, between which the reactions of C4 photosynthesis are partitioned. Leaf-like organs of maize such as husk leaves, however, develop a C3 pattern of differentiation whereby ribulose bisphosphate carboxylase (RuBPCase) accumulates in all photosynthetic cell types. The Golden2 (G2) gene has previously been shown to play a role in bundle sheath cell differentiation in C4 leaf blades and to play a less well-defined role in C3 maize tissues. To further analyze G2 gene function in maize, four g2 mutations have been characterized. Three of these mutations were induced by the transposable element Spm. In g2-bsd1-m1 and g2-bsd1-s1, the element is inserted in the second intron and in g2-pg14 the element is inserted in the promoter. In the fourth case, g2-R, four amino acid changes and premature polyadenylation of the G2 transcript are observed. The phenotypes conditioned by these four mutations demonstrate that the primary role of G2 in C4 leaf blades is to promote bundle sheath cell chloroplast development. C4 photosynthetic enzymes can accumulate in both bundle sheath and mesophyll cells in the absence of G2. In C3 tissue, however, G2 influences both chloroplast differentiation and photosynthetic enzyme accumulation patterns. On the basis of the phenotypic data obtained, a model that postulates how G2 acts to facilitate C4 and C3 patterns of tissue development is proposed.

Bundle sheath chloroplasts of rice are more sensitive to drought stress than mesophyll chloroplasts

2003 ◽  
Vol 160 (11) ◽  
pp. 1319-1327 ◽  
Author(s):  
Koji Yamane ◽  
Koji Hayakawa ◽  
Michio Kawasaki ◽  
Mitsutaka Taniguchi ◽  
Hiroshi Miyake
Keyword(s):  
Drought Stress ◽  
Bundle Sheath

scholarly journals Transmission of Engineered Plastids in Sugarcane, a C4 Monocotyledonous Plant, Reveals that Sorting of Preprogrammed Progenitor Cells Produce Heteroplasmy

Plants ◽  
2020 ◽  
Vol 10 (1) ◽  
pp. 26
Author(s):  
Ghulam Mustafa ◽  
Muhammad Sarwar Khan
Keyword(s):  
Progenitor Cells ◽  
Plastid Transformation ◽  
Bundle Sheath ◽  
Homologous Sequence ◽  
Regeneration System ◽  
Mesophyll Cells ◽  
Transgenic Sugarcane ◽  
Bundle Sheath Cells ◽  
Dicotyledonous Plants ◽  
Species Specific

We report here plastid transformation in sugarcane using biolistic transformation and embryogenesis-based regeneration approaches. Somatic embryos were developed from unfurled leaf sections, containing preprogrammed progenitor cells, to recover transformation events on antibiotic-containing regeneration medium. After developing a proficient regeneration system, the FLARE-S (fluorescent antibiotic resistance enzyme, spectinomycin and streptomycin) expression cassette that carries species-specific homologous sequence tails was used to transform plastids and track gene transmission and expression in sugarcane. Plants regenerated from streptomycin-resistant and genetically confirmed shoots were subjected to visual detection of the fluorescent enzyme using a fluorescent stereomicroscope, after genetic confirmation. The resultant heteroplasmic shoots remained to segregate on streptomycin-containing MS medium, referring to the unique pattern of division and sorting of cells in C4 monocotyledonous compared to C3 monocotyledonous and dicotyledonous plants since in sugarcane bundle sheath and mesophyll cells are distinct and sort independently after division. Hence, the transformation of either mesophyll or bundle sheath cells will develop heteroplasmic transgenic plants, suggesting the transformation of both types of cells. Whilst developed transgenic sugarcane plants are heteroplasmic, and selection-based regeneration protocol envisaging the role of division and sorting of cells in the purification of transplastomic demands further improvement, the study has established many parameters that may open up exciting possibilities to express genes of agricultural or pharmaceutical importance in sugarcane.

scholarly journals The bundle sheath of rice is conditioned to play an active role in water transport as well as sulfur assimilation and jasmonic acid synthesis

2021 ◽  
Author(s):  
Lei Hua ◽  
Sean R. Stevenson ◽  
Ivan Reyna‐Llorens ◽  
Haiyan Xiong ◽  
Stanislav Kopriva ◽  
...  
Keyword(s):  
Jasmonic Acid ◽  
Water Transport ◽  
Active Role ◽  
Acid Synthesis ◽  
Bundle Sheath ◽  
Sulfur Assimilation

scholarly journals Associations between partitioning of carboxylase activity and bundle sheath leakiness to CO2, carbon isotope discrimination, photosynthesis, and growth in sugarcane

1996 ◽  
Vol 47 (7) ◽  
pp. 907-914 ◽  
Author(s):  
Nicanor Z. Saliendra ◽  
Frederick C. Meinzer ◽  
Matthew Perry ◽  
Margaret Thom
Keyword(s):  
Carbon Isotope ◽  
Carbon Isotope Discrimination ◽  
Bundle Sheath ◽  
Carboxylase Activity ◽  
Isotope Discrimination

Estimation of diffusive resistance of bundle sheath cells to CO2 from modeling of C4 photosynthesis

1996 ◽  
Vol 49 (3) ◽  
pp. 195-208 ◽  
Author(s):  
Dongxiang He ◽  
Gerald E. Edwards
Keyword(s):  
C4 Photosynthesis ◽  
Bundle Sheath ◽  
Diffusive Resistance ◽  
Bundle Sheath Cells ◽  
Sheath Cells
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