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ก. หลังอาน
·Uluis no k², non-reducing sugar,
amino â
an. You
Pressure
flow gradient
=
* Bidirection flow?
Process
short distance
Phloem leading
source
cell
791
ค. ม น 57E+
H50 mn xylem
STE
1 STE
9.5% (4p) ห้ STE ↑
long distance
2. Phloem translocation
3
• Pressure gradient flow
+ เน
short distance
Phloem unloading
• conc. +
→ concit
STE CC sink cell
CIN>
You Ys
17494
Xylem vessel
element or tracheid
①sieve baben
source cell
Mesoph
Chloranchyma
Nasmodesmata
Guard call
Osmosis
Water
High
pressure
Wloem Joading short-distance
pathway
Sourcecell
of nutrient
type
all
ก. น
Active transport
* pump
Passive transport
Minerals
Macronutrient crusnirdin)
Micronutrient coiwn. Low)
"CHON PK Ca Mg PS Si
·J.) N, Mg, Fe » chlorophyll
·2.) Ca si B = CW
H. Ur
3.) P = ATP, DNA, RNA
4) S win methionine, Cysteine
PLAS
Mucigel.com cost cap)
glycoprotein
CO, reacts
with HO to
form HCO
which releases
H upon
disassociation
Translocation vivos 4 "Long-distance pathway?
•pressure flow
w
Roots acidify |
the soll solution
by releasing co,
from respiration
and pumping H
into the soil.
Hons in the soil solution
neutralize the negative charge of soil
particles, causing release of mineral
cations into the soll solution
Active transport
Soll particle
passive transport
Root har
pump
clative tra
Roots
released
cations
Passive transport
Conc.
Low
pressure
CC or PP
Water
Sink cell
in root
เม อ ง งาน el
(a) Ectomycorrhizae. The mantle of
the fungal mycelium ensheathes
the root. Fungal hyphae extend
from the mantle Into the soll,
absorbing water and minerals,
especially phosphate. Hyphae
also extend into the extracellular
spaces of the root cortex
providing extensive surface area
for nutrient exchange between
the fungus and its fost plant.
EXHORT Has garde
Mantle (fungal sheath)
Epidermal-
cell
-Endodermis
Fungal
hyphae
between
·Arbuscule
o
•L 111cw wild noi ya 101 cell MB.
á 187 cell MB →
นันทพ
CH.
↓
เเ ป
(b) Arbuscular mycorrhizae CW
(endomycorrhizae). No mantle
forms around the root, but
microscopic fungal hyphae extend
Into the root Within the root
cortex, the fungus makes
extensive contact with the plant
through branching of babae that
form arbuscules, providing an
anormous surface a for
nutrient swapping. The hyphae
penetrate the cell walls, but not
the plasma membranes, of cells
within the cortex
Mantle-
1.5 mm
(fungal sheath) root hair
Fungal
hyphae
Root-
hair
cortical
cells
(LM
50 μm
Epidermes
Cortex
Cortical cell-
-Endodermis
-Fungal
vesicle
-Casparian
strip
Arbuscules
-Plasma
membrane
(LMO